Confused pairs
Incorrect answers between two species (undirected). With a country selected, only mix-ups from games in that country are counted, and only pairs where both species are on that country's checklist are shown.
| Species A (lower id) | Species B (higher id) | Total wrong | A was target → picked B | B was target → picked A |
|---|---|---|---|---|
| Louisiana Waterthrush Parkesia motacilla | Northern Waterthrush Parkesia noveboracensis | 8 | 6 | 2 |
| Black-headed Trogon Trogon melanocephalus | Graceful Black-throated Trogon Trogon tenellus | 8 | 7 | 1 |
| Leach's Storm-Petrel Hydrobates leucorhous | Wedge-rumped Storm-Petrel Hydrobates tethys | 8 | 4 | 4 |
| Crested Bobwhite Colinus cristatus | Marbled Wood-Quail Odontophorus gujanensis | 7 | 2 | 5 |
| Buff-throated Saltator Saltator maximus | Black-headed Saltator Saltator atriceps | 7 | 1 | 6 |
| Amazon Kingfisher Chloroceryle amazona | Green Kingfisher Chloroceryle americana | 7 | 3 | 4 |
| Scissor-tailed Flycatcher Tyrannus forficatus | Fork-tailed Flycatcher Tyrannus savana | 7 | 2 | 5 |
| White-shouldered Tanager Loriotus luctuosus | White-lined Tanager Tachyphonus rufus | 6 | 4 | 2 |
| Olive-sided Flycatcher Contopus cooperi | Dark Pewee Contopus lugubris | 6 | 4 | 2 |
| Yellow-throated Euphonia Euphonia hirundinacea | Thick-billed Euphonia Euphonia laniirostris | 6 | 2 | 4 |
| Long-billed Starthroat Heliomaster longirostris | Plain-capped Starthroat Heliomaster constantii | 6 | 2 | 4 |
| Lesser Nighthawk Chordeiles acutipennis | Common Pauraque Nyctidromus albicollis | 6 | 5 | 1 |
| Common Ground Dove Columbina passerina | Plain-breasted Ground Dove Columbina minuta | 6 | 1 | 5 |
| Isthmian Wren Cantorchilus elutus | White-breasted Wood-Wren Henicorhina leucosticta | 6 | 5 | 1 |
| Short-tailed Hawk Buteo brachyurus | Zone-tailed Hawk Buteo albonotatus | 6 | 4 | 2 |
| Blue Dacnis Dacnis cayana | Shining Honeycreeper Cyanerpes lucidus | 6 | 2 | 4 |
| Chimney Swift Chaetura pelagica | Vaux's Swift Chaetura vauxi | 6 | 4 | 2 |
| Black-crowned Antshrike Thamnophilus atrinucha | Black-hooded Antshrike Thamnophilus bridgesi | 6 | 2 | 4 |
| Yellow-crowned Night Heron Nyctanassa violacea | Black-crowned Night Heron Nycticorax nycticorax | 5 | 1 | 4 |
| Wedge-rumped Storm-Petrel Hydrobates tethys | Black Storm-Petrel Hydrobates melania | 5 | 3 | 2 |
| Cinnamon Woodpecker Celeus loricatus | Chestnut-coloured Woodpecker Celeus castaneus | 5 | 1 | 4 |
| Rufous Motmot Baryphthengus martii | Broad-billed Motmot Electron platyrhynchum | 5 | 0 | 5 |
| Cabanis's Wren Cantorchilus modestus | Isthmian Wren Cantorchilus elutus | 5 | 3 | 2 |
| White-tailed Emerald Microchera chionura | Scaly-breasted Hummingbird Phaeochroa cuvierii | 5 | 4 | 1 |
| Northern Rough-winged Swallow Stelgidopteryx serripennis | Southern Rough-winged Swallow Stelgidopteryx ruficollis | 5 | 5 | 0 |
| Crested Caracara Caracara plancus | Yellow-headed Caracara Daptrius chimachima | 5 | 2 | 3 |
| Great-tailed Grackle Quiscalus mexicanus | Nicaraguan Grackle Quiscalus nicaraguensis | 5 | 2 | 3 |
| Orange-billed Nightingale-Thrush Catharus aurantiirostris | Slaty-backed Nightingale-Thrush Catharus fuscater | 5 | 2 | 3 |
| Chestnut-backed Antbird Poliocrania exsul | Bicoloured Antbird Gymnopithys bicolor | 5 | 3 | 2 |
| Elegant Tern Thalasseus elegans | Royal Tern Thalasseus maximus | 5 | 3 | 2 |
| Pale-vented Thrush Turdus obsoletus | Clay-coloured Thrush Turdus grayi | 5 | 4 | 1 |
| Red-crowned Ant-Tanager Habia rubica | Red-throated Ant-Tanager Driophlox fuscicauda | 5 | 4 | 1 |
| Little Tinamou Crypturellus soui | Thicket Tinamou Crypturellus cinnamomeus | 5 | 4 | 1 |
| Olivaceous Woodcreeper Sittasomus griseicapillus | Tawny-winged Woodcreeper Dendrocincla anabatina | 5 | 4 | 1 |
| Grey-capped Flycatcher Myiozetetes granadensis | Golden-bellied Flycatcher Myiodynastes hemichrysus | 5 | 4 | 1 |
| Pale-billed Woodpecker Campephilus guatemalensis | Lineated Woodpecker Dryocopus lineatus | 5 | 2 | 3 |
| Mottled Owl Strix virgata | Striped Owl Asio clamator | 5 | 2 | 3 |
| Black-striped Woodcreeper Xiphorhynchus lachrymosus | Spotted Woodcreeper Xiphorhynchus erythropygius | 5 | 5 | 0 |
| Chiriqui Foliage-gleaner Automolus exsertus | Spotted Barbtail Premnoplex brunnescens | 5 | 2 | 3 |
| Ringed Kingfisher Megaceryle torquata | Amazon Kingfisher Chloroceryle amazona | 5 | 2 | 3 |
| Killdeer Charadrius vociferus | Wilson's Plover Anarhynchus wilsonia | 5 | 0 | 5 |
| Summer Tanager Piranga rubra | Western Tanager Piranga ludoviciana | 4 | 2 | 2 |
| Bronze-tailed Plumeleteer Chalybura urochrysia | Crowned Woodnymph Thalurania colombica | 4 | 2 | 2 |
| Barred Hawk Morphnarchus princeps | Roadside Hawk Rupornis magnirostris | 4 | 1 | 3 |
| Tropical Screech-Owl Megascops choliba | Pacific Screech-Owl Megascops cooperi | 4 | 2 | 2 |
| Mountain Thrush Turdus plebejus | Clay-coloured Thrush Turdus grayi | 4 | 3 | 1 |
| Blue Grosbeak Passerina caerulea | Indigo Bunting Passerina cyanea | 4 | 2 | 2 |
| Swainson's Hawk Buteo swainsoni | Red-tailed Hawk Buteo jamaicensis | 4 | 1 | 3 |
| Shiny Cowbird Molothrus bonariensis | Bronzed Cowbird Molothrus aeneus | 4 | 0 | 4 |
| Philadelphia Vireo Vireo philadelphicus | Yellow-green Vireo Vireo flavoviridis | 4 | 3 | 1 |
| Red-crowned Woodpecker Melanerpes rubricapillus | Hoffmann's Woodpecker Melanerpes hoffmannii | 4 | 4 | 0 |
| Sulphur-bellied Flycatcher Myiodynastes luteiventris | Piratic Flycatcher Legatus leucophaius | 4 | 3 | 1 |
| Plain Chachalaca Ortalis vetula | Grey-headed Chachalaca Ortalis cinereiceps | 4 | 2 | 2 |
| Northern Beardless-Tyrannulet Camptostoma imberbe | Northern Mouse-coloured Tyrannulet Nesotriccus incomtus | 4 | 3 | 1 |
| Gartered Violaceous Trogon Trogon caligatus | Graceful Black-throated Trogon Trogon tenellus | 4 | 1 | 3 |
| Sulphur-rumped Tanager Heterospingus rubrifrons | Slaty Finch Haplospiza rustica | 4 | 4 | 0 |
| Striped Cuckoo Tapera naevia | Pheasant Cuckoo Dromococcyx phasianellus | 4 | 3 | 1 |
| Scrub Greenlet Hylophilus flavipes | Lesser Greenlet Pachysylvia decurtata | 4 | 1 | 3 |
| Green-crowned Brilliant Heliodoxa jacula | Talamanca Hummingbird Eugenes spectabilis | 4 | 3 | 1 |
| Inca Dove Columbina inca | Common Ground Dove Columbina passerina | 4 | 1 | 3 |
| Collared Aracari Pteroglossus torquatus | Fiery-billed Aracari Pteroglossus frantzii | 4 | 3 | 1 |
| Sanderling Calidris alba | Semipalmated Sandpiper Calidris pusilla | 4 | 0 | 4 |
| Variable Seedeater Sporophila corvina | Morelet's Seedeater Sporophila morelleti | 4 | 4 | 0 |
| Morelet's Seedeater Sporophila morelleti | Yellow-bellied Seedeater Sporophila nigricollis | 4 | 4 | 0 |
| Yellow-bellied Elaenia Elaenia flavogaster | Mountain Elaenia Elaenia frantzii | 4 | 2 | 2 |
| Lesson's Motmot Momotus lessonii | Keel-billed Motmot Electron carinatum | 4 | 2 | 2 |
| Lesser Elaenia Elaenia chiriquensis | Mountain Elaenia Elaenia frantzii | 4 | 1 | 3 |
| White-collared Swift Streptoprocne zonaris | Lesser Swallow-tailed Swift Panyptila cayennensis | 4 | 0 | 4 |
| Crowned Woodnymph Thalurania colombica | White-tailed Emerald Microchera chionura | 3 | 2 | 1 |
| Red-billed Pigeon Patagioenas flavirostris | Ruddy Pigeon Patagioenas subvinacea | 3 | 3 | 0 |
| Lineated Foliage-gleaner Syndactyla subalaris | Streak-breasted Treehunter Thripadectes rufobrunneus | 3 | 2 | 1 |
| Red Knot Calidris canutus | Surfbird Calidris virgata | 3 | 3 | 0 |
| Scaly-breasted Hummingbird Phaeochroa cuvierii | Blue-tailed Hummingbird Saucerottia cyanura | 3 | 2 | 1 |
| Stripe-headed Sparrow Peucaea ruficauda | Black-striped Sparrow Arremonops conirostris | 3 | 2 | 1 |
| Maroon-chested Ground Dove Paraclaravis mondetoura | Ruddy Quail-Dove Geotrygon montana | 3 | 1 | 2 |
| Northern Mouse-coloured Tyrannulet Nesotriccus incomtus | Cocos Tyrannulet Nesotriccus ridgwayi | 3 | 0 | 3 |
| Red-headed Barbet Eubucco bourcierii | Prong-billed Barbet Semnornis frantzii | 3 | 2 | 1 |
| Band-tailed Pigeon Patagioenas fasciata | Short-billed Pigeon Patagioenas nigrirostris | 3 | 2 | 1 |
| Thick-billed Seed-Finch Sporophila funerea | Nicaraguan Seed-Finch Sporophila nuttingi | 3 | 0 | 3 |
| Yellow Tyrannulet Capsiempis flaveola | Yellow-bellied Elaenia Elaenia flavogaster | 3 | 3 | 0 |
| Ruddy Pigeon Patagioenas subvinacea | Short-billed Pigeon Patagioenas nigrirostris | 3 | 1 | 2 |
| Western Wood-Pewee Contopus sordidulus | Eastern Wood-Pewee Contopus virens | 3 | 1 | 2 |
| Yellow-crowned Tyrannulet Tyrannulus elatus | Yellow-bellied Elaenia Elaenia flavogaster | 3 | 3 | 0 |
| Grey Hawk Buteo plagiatus | Broad-winged Hawk Buteo platypterus | 3 | 2 | 1 |
| Crested Eagle Morphnus guianensis | Harpy Eagle Harpia harpyja | 3 | 2 | 1 |
| Bronzy Hermit Glaucis aeneus | Long-billed Hermit Phaethornis longirostris | 3 | 3 | 0 |
| Black-headed Saltator Saltator atriceps | Cinnamon-bellied Saltator Saltator grandis | 3 | 1 | 2 |
| Paint-billed Crake Mustelirallus erythrops | White-throated Crake Laterallus albigularis | 3 | 1 | 2 |
| Northern Tropical Pewee Contopus bogotensis | Eastern Wood-Pewee Contopus virens | 3 | 3 | 0 |
| Stripe-tailed Hummingbird Eupherusa eximia | Blue-vented Hummingbird Saucerottia hoffmanni | 3 | 2 | 1 |
| White-crowned Parrot Pionus senilis | White-fronted Amazon Amazona albifrons | 3 | 3 | 0 |
| Lesser Greenlet Pachysylvia decurtata | Philadelphia Vireo Vireo philadelphicus | 3 | 2 | 1 |
| Cabanis's Ground-Sparrow Melozone cabanisi | Rusty Sparrow Aimophila rufescens | 3 | 0 | 3 |
| Anhinga Anhinga anhinga | Neotropic Cormorant Nannopterum brasilianum | 3 | 1 | 2 |
| Rufous-breasted Wren Pheugopedius rutilus | Black-throated Wren Pheugopedius atrogularis | 3 | 2 | 1 |
| Plain-breasted Ground Dove Columbina minuta | Ruddy Ground Dove Columbina talpacoti | 3 | 0 | 3 |
| Yellow-billed Cacique Amblycercus holosericeus | Crested Oropendola Psarocolius decumanus | 3 | 0 | 3 |
| Russet-naped Wood-Rail Aramides albiventris | Grey-cowled Wood-Rail Aramides cajaneus | 3 | 2 | 1 |
| Striated Heron Butorides striata | Green Heron Butorides virescens | 3 | 2 | 1 |
| Mangrove Vireo Vireo pallens | Yellow-winged Vireo Vireo carmioli | 3 | 0 | 3 |
| Great Crested Flycatcher Myiarchus crinitus | Brown-crested Flycatcher Myiarchus tyrannulus | 3 | 1 | 2 |
| Snail Kite Rostrhamus sociabilis | Mississippi Kite Ictinia mississippiensis | 3 | 2 | 1 |
| Marbled Godwit Limosa fedoa | Short-billed Dowitcher Limnodromus griseus | 3 | 1 | 2 |
| Black-crowned Antshrike Thamnophilus atrinucha | Plain Antvireo Dysithamnus mentalis | 3 | 3 | 0 |
| Bare-shanked Screech-Owl Megascops clarkii | Tropical Screech-Owl Megascops choliba | 3 | 3 | 0 |
| Least Sandpiper Calidris minutilla | Pectoral Sandpiper Calidris melanotos | 3 | 0 | 3 |
| Black-bellied Whistling-Duck Dendrocygna autumnalis | Fulvous Whistling-Duck Dendrocygna bicolor | 3 | 1 | 2 |
| Volcano Hummingbird Selasphorus flammula | Scintillant Hummingbird Selasphorus scintilla | 3 | 2 | 1 |
| Mississippi Kite Ictinia mississippiensis | Plumbeous Kite Ictinia plumbea | 3 | 1 | 2 |
| Short-billed Dowitcher Limnodromus griseus | Long-billed Dowitcher Limnodromus scolopaceus | 3 | 2 | 1 |
| Crested Guan Penelope purpurascens | Great Curassow Crax rubra | 3 | 2 | 1 |
| Bay Wren Cantorchilus nigricapillus | White-breasted Wood-Wren Henicorhina leucosticta | 3 | 1 | 2 |
| Grey-throated Leaftosser Sclerurus albigularis | Tawny-winged Woodcreeper Dendrocincla anabatina | 3 | 1 | 2 |
| White-breasted Wood-Wren Henicorhina leucosticta | Grey-breasted Wood-Wren Henicorhina leucophrys | 3 | 1 | 2 |
| Rufescent Tiger-Heron Tigrisoma lineatum | Bare-throated Tiger-Heron Tigrisoma mexicanum | 3 | 2 | 1 |
| Laughing Gull Leucophaeus atricilla | Franklin's Gull Leucophaeus pipixcan | 3 | 2 | 1 |
| Great Kiskadee Pitangus sulphuratus | Boat-billed Flycatcher Megarynchus pitangua | 3 | 1 | 2 |
| Great Kiskadee Pitangus sulphuratus | Social Flycatcher Myiozetetes similis | 3 | 1 | 2 |
| Kentucky Warbler Geothlypis formosa | Cerulean Warbler Setophaga cerulea | 3 | 0 | 3 |
| Cerulean Warbler Setophaga cerulea | Bay-breasted Warbler Setophaga castanea | 3 | 0 | 3 |
| Lesser Violetear Colibri cyanotus | Green-breasted Mango Anthracothorax prevostii | 3 | 0 | 3 |
| Northern Tropical Pewee Contopus bogotensis | Acadian Flycatcher Empidonax virescens | 3 | 3 | 0 |
| Sulphur-winged Parakeet Pyrrhura hoffmanni | Olive-throated Parakeet Eupsittula nana | 3 | 1 | 2 |
| Band-tailed Barbthroat Threnetes ruckeri | Long-billed Hermit Phaethornis longirostris | 3 | 3 | 0 |
| Sand Martin Riparia riparia | Southern Rough-winged Swallow Stelgidopteryx ruficollis | 3 | 3 | 0 |
| Bay-breasted Warbler Setophaga castanea | Chestnut-sided Warbler Setophaga pensylvanica | 3 | 3 | 0 |
| Crane Hawk Geranospiza caerulescens | Savanna Hawk Buteogallus meridionalis | 3 | 0 | 3 |
| Blue-chested Hummingbird Polyerata amabilis | Charming Hummingbird Polyerata decora | 3 | 1 | 2 |
| Bran-coloured Flycatcher Myiophobus fasciatus | Tawny-chested Flycatcher Aphanotriccus capitalis | 3 | 2 | 1 |
| Slaty-tailed Trogon Trogon massena | Baird's Trogon Trogon bairdii | 3 | 2 | 1 |
| Common Black Hawk Buteogallus anthracinus | Great Black Hawk Buteogallus urubitinga | 3 | 2 | 1 |
| Cocoa Woodcreeper Xiphorhynchus susurrans | Spotted Woodcreeper Xiphorhynchus erythropygius | 3 | 0 | 3 |
| Streaked Flycatcher Myiodynastes maculatus | Sulphur-bellied Flycatcher Myiodynastes luteiventris | 3 | 0 | 3 |
| Green-crowned Brilliant Heliodoxa jacula | Plain-capped Starthroat Heliomaster constantii | 3 | 3 | 0 |
| Streaked Flycatcher Myiodynastes maculatus | Piratic Flycatcher Legatus leucophaius | 3 | 1 | 2 |
| Pheasant Cuckoo Dromococcyx phasianellus | Lesser Ground-Cuckoo Morococcyx erythropygus | 3 | 1 | 2 |
| Great Tinamou Tinamus major | Little Tinamou Crypturellus soui | 3 | 3 | 0 |
| Brown Noddy Anous stolidus | Black Noddy Anous minutus | 3 | 3 | 0 |
| Mistletoe Tyrannulet Zimmerius parvus | Bran-coloured Flycatcher Myiophobus fasciatus | 3 | 1 | 2 |
| Spotted Sandpiper Actitis macularius | Solitary Sandpiper Tringa solitaria | 3 | 1 | 2 |
| Elegant Trogon Trogon elegans | Collared Trogon Trogon collaris | 3 | 3 | 0 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Yellowish Flycatcher Empidonax flavescens | 3 | 3 | 0 |
| Flame-coloured Tanager Piranga bidentata | White-winged Tanager Piranga leucoptera | 3 | 2 | 1 |
| Lesson's Motmot Momotus lessonii | Turquoise-browed Motmot Eumomota superciliosa | 3 | 1 | 2 |
| Common Tody-Flycatcher Todirostrum cinereum | Black-headed Tody-Flycatcher Todirostrum nigriceps | 3 | 1 | 2 |
| Black-faced Grosbeak Caryothraustes poliogaster | Black-thighed Grosbeak Pheucticus tibialis | 3 | 1 | 2 |
| Blue Seedeater Amaurospiza concolor | Blue-black Grosbeak Cyanoloxia cyanoides | 3 | 2 | 1 |
| Olive-backed Euphonia Euphonia gouldi | Tawny-capped Euphonia Euphonia anneae | 3 | 3 | 0 |
| Indigo Bunting Passerina cyanea | Painted Bunting Passerina ciris | 3 | 1 | 2 |
| Bridled Tern Onychoprion anaethetus | Gull-billed Tern Gelochelidon nilotica | 3 | 2 | 1 |
| Rufous-browed Peppershrike Cyclarhis gujanensis | Scrub Greenlet Hylophilus flavipes | 3 | 0 | 3 |
| Tawny-crested Tanager Tachyphonus delatrii | White-lined Tanager Tachyphonus rufus | 3 | 0 | 3 |
| Fasciated Antshrike Cymbilaimus lineatus | Barred Antshrike Thamnophilus doliatus | 3 | 3 | 0 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Southern Beardless-Tyrannulet Camptostoma obsoletum | 3 | 3 | 0 |
| Blue-grey Tanager Thraupis episcopus | Palm Tanager Thraupis palmarum | 3 | 2 | 1 |
| Speckled Tanager Ixothraupis guttata | Spangle-cheeked Tanager Tangara dowii | 3 | 0 | 3 |
| Olive-sided Flycatcher Contopus cooperi | Northern Tropical Pewee Contopus bogotensis | 3 | 3 | 0 |
| Black-cowled Oriole Icterus prosthemelas | Streak-backed Oriole Icterus pustulatus | 2 | 1 | 1 |
| Velvety Manakin Lepidothrix velutina | Red-capped Manakin Ceratopipra mentalis | 2 | 2 | 0 |
| Streak-backed Oriole Icterus pustulatus | Spot-breasted Oriole Icterus pectoralis | 2 | 2 | 0 |
| Streak-backed Oriole Icterus pustulatus | Baltimore Oriole Icterus galbula | 2 | 1 | 1 |
| Ruby-throated Hummingbird Archilochus colubris | Scintillant Hummingbird Selasphorus scintilla | 2 | 0 | 2 |
| Orange-collared Manakin Manacus aurantiacus | Red-capped Manakin Ceratopipra mentalis | 2 | 1 | 1 |
| White-rumped Sandpiper Calidris fuscicollis | Least Sandpiper Calidris minutilla | 2 | 1 | 1 |
| Least Sandpiper Calidris minutilla | Western Sandpiper Calidris mauri | 2 | 1 | 1 |
| Bronzed Cowbird Molothrus aeneus | Great-tailed Grackle Quiscalus mexicanus | 2 | 0 | 2 |
| Giant Cowbird Molothrus oryzivorus | Great-tailed Grackle Quiscalus mexicanus | 2 | 1 | 1 |
| Lovely Cotinga Cotinga amabilis | Turquoise Cotinga Cotinga ridgwayi | 2 | 0 | 2 |
| Melodious Blackbird Dives dives | Nicaraguan Grackle Quiscalus nicaraguensis | 2 | 2 | 0 |
| Blue-winged Warbler Vermivora cyanoptera | Prothonotary Warbler Protonotaria citrea | 2 | 0 | 2 |
| Swallow-tailed Gull Creagrus furcatus | Sabine's Gull Xema sabini | 2 | 0 | 2 |
| Scintillant Hummingbird Selasphorus scintilla | Canivet's Emerald Cynanthus canivetii | 2 | 1 | 1 |
| Scintillant Hummingbird Selasphorus scintilla | Garden Emerald Chlorostilbon assimilis | 2 | 0 | 2 |
| Pacific Screech-Owl Megascops cooperi | Mottled Owl Strix virgata | 2 | 1 | 1 |
| Grey-crowned Yellowthroat Geothlypis poliocephala | Mourning Warbler Geothlypis philadelphia | 2 | 1 | 1 |
| Laughing Gull Leucophaeus atricilla | Herring Gull Larus argentatus | 2 | 2 | 0 |
| Speckled Mourner Laniocera rufescens | White-winged Becard Pachyramphus polychopterus | 2 | 1 | 1 |
| Mourning Warbler Geothlypis philadelphia | Olive-crowned Yellowthroat Geothlypis semiflava | 2 | 0 | 2 |
| Spectacled Owl Pulsatrix perspicillata | Mottled Owl Strix virgata | 2 | 0 | 2 |
| Barred Becard Pachyramphus versicolor | White-winged Becard Pachyramphus polychopterus | 2 | 1 | 1 |
| Striped Cuckoo Tapera naevia | Lesser Ground-Cuckoo Morococcyx erythropygus | 2 | 2 | 0 |
| Franklin's Gull Leucophaeus pipixcan | Herring Gull Larus argentatus | 2 | 0 | 2 |
| Central American Pygmy-Owl Glaucidium griseiceps | Ferruginous Pygmy-Owl Glaucidium brasilianum | 2 | 1 | 1 |
| Grey-rumped Swift Chaetura cinereiventris | Costa Rican Swift Chaetura fumosa | 2 | 0 | 2 |
| Ring-billed Gull Larus delawarensis | Black Skimmer Rynchops niger | 2 | 1 | 1 |
| Canivet's Emerald Cynanthus canivetii | Bronze-tailed Plumeleteer Chalybura urochrysia | 2 | 2 | 0 |
| White-winged Becard Pachyramphus polychopterus | Black-and-white Becard Pachyramphus albogriseus | 2 | 0 | 2 |
| White-winged Becard Pachyramphus polychopterus | Rose-throated Becard Pachyramphus aglaiae | 2 | 2 | 0 |
| Maroon-chested Ground Dove Paraclaravis mondetoura | Violaceous Quail-Dove Geotrygon violacea | 2 | 2 | 0 |
| Stub-tailed Spadebill Platyrinchus cancrominus | White-throated Spadebill Platyrinchus mystaceus | 2 | 2 | 0 |
| Violet-headed Hummingbird Klais guimeti | Bronze-tailed Plumeleteer Chalybura urochrysia | 2 | 1 | 1 |
| Herring Gull Larus argentatus | White Tern Gygis alba | 2 | 0 | 2 |
| Yellow-rumped Warbler Setophaga coronata | Black-throated Green Warbler Setophaga virens | 2 | 2 | 0 |
| Black-headed Trogon Trogon melanocephalus | Gartered Violaceous Trogon Trogon caligatus | 2 | 0 | 2 |
| Olive-streaked Flycatcher Mionectes olivaceus | Ochre-bellied Flycatcher Mionectes oleagineus | 2 | 1 | 1 |
| Baird's Trogon Trogon bairdii | Graceful Black-throated Trogon Trogon tenellus | 2 | 1 | 1 |
| Lesser Ground-Cuckoo Morococcyx erythropygus | Rufous-vented Ground-Cuckoo Neomorphus geoffroyi | 2 | 1 | 1 |
| Golden-crowned Warbler Basileuterus culicivorus | Costa Rican Warbler Basileuterus melanotis | 2 | 2 | 0 |
| Slaty-capped Flycatcher Leptopogon superciliaris | Rufous-browed Tyrannulet Phylloscartes superciliaris | 2 | 0 | 2 |
| Buff-rumped Warbler Myiothlypis fulvicauda | Slate-throated Redstart Myioborus miniatus | 2 | 2 | 0 |
| Canada Warbler Cardellina canadensis | Wilson's Warbler Cardellina pusilla | 2 | 1 | 1 |
| Slate-throated Redstart Myioborus miniatus | Collared Redstart Myioborus torquatus | 2 | 1 | 1 |
| Hepatic Tanager Piranga flava | Summer Tanager Piranga rubra | 2 | 2 | 0 |
| Slaty-capped Flycatcher Leptopogon superciliaris | Black-capped Pygmy-Tyrant Myiornis atricapillus | 2 | 1 | 1 |
| Slaty-capped Flycatcher Leptopogon superciliaris | Scale-crested Pygmy-Tyrant Lophotriccus pileatus | 2 | 2 | 0 |
| Brown Noddy Anous stolidus | Bridled Tern Onychoprion anaethetus | 2 | 1 | 1 |
| Rufous-browed Tyrannulet Phylloscartes superciliaris | Scale-crested Pygmy-Tyrant Lophotriccus pileatus | 2 | 1 | 1 |
| Violet Sabrewing Campylopterus hemileucurus | Crowned Woodnymph Thalurania colombica | 2 | 0 | 2 |
| Northern Bentbill Oncostoma cinereigulare | Slate-headed Tody-Flycatcher Poecilotriccus sylvia | 2 | 2 | 0 |
| Costa Rican Swift Chaetura fumosa | Lesser Swallow-tailed Swift Panyptila cayennensis | 2 | 2 | 0 |
| Slate-headed Tody-Flycatcher Poecilotriccus sylvia | Common Tody-Flycatcher Todirostrum cinereum | 2 | 1 | 1 |
| Ringed Kingfisher Megaceryle torquata | Belted Kingfisher Megaceryle alcyon | 2 | 1 | 1 |
| Black-headed Tody-Flycatcher Todirostrum nigriceps | Yellow-olive Flatbill Tolmomyias sulphurescens | 2 | 2 | 0 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Yellow-bellied Tyrannulet Ornithion semiflavum | 2 | 2 | 0 |
| Bridled Tern Onychoprion anaethetus | Black Tern Chlidonias niger | 2 | 0 | 2 |
| American Pygmy Kingfisher Chloroceryle aenea | Green-and-rufous Kingfisher Chloroceryle inda | 2 | 2 | 0 |
| White-necked Puffbird Notharchus hyperrhynchus | Pied Puffbird Notharchus tectus | 2 | 2 | 0 |
| White-necked Puffbird Notharchus hyperrhynchus | White-fronted Nunbird Monasa morphoeus | 2 | 2 | 0 |
| Red-billed Pigeon Patagioenas flavirostris | Short-billed Pigeon Patagioenas nigrirostris | 2 | 2 | 0 |
| Northern Beardless-Tyrannulet Camptostoma imberbe | Southern Beardless-Tyrannulet Camptostoma obsoletum | 2 | 0 | 2 |
| Shining Honeycreeper Cyanerpes lucidus | Green Honeycreeper Chlorophanes spiza | 2 | 1 | 1 |
| White-necked Jacobin Florisuga mellivora | Bronzy Hermit Glaucis aeneus | 2 | 2 | 0 |
| Sulphur-rumped Tanager Heterospingus rubrifrons | Black-and-yellow Tanager Chrysothlypis chrysomelas | 2 | 2 | 0 |
| Common Tern Sterna hirundo | Royal Tern Thalasseus maximus | 2 | 1 | 1 |
| Ruddy Quail-Dove Geotrygon montana | Violaceous Quail-Dove Geotrygon violacea | 2 | 1 | 1 |
| Blue-black Grassquit Volatinia jacarina | Nicaraguan Seed-Finch Sporophila nuttingi | 2 | 2 | 0 |
| Variable Seedeater Sporophila corvina | Buff-throated Saltator Saltator maximus | 2 | 0 | 2 |
| Greenish Elaenia Myiopagis viridicata | Yellow-bellied Elaenia Elaenia flavogaster | 2 | 1 | 1 |
| Leach's Storm-Petrel Hydrobates leucorhous | Black Storm-Petrel Hydrobates melania | 2 | 2 | 0 |
| Yellow-throated Toucan Ramphastos ambiguus | Keel-billed Toucan Ramphastos sulfuratus | 2 | 0 | 2 |
| Bronzy Hermit Glaucis aeneus | Band-tailed Barbthroat Threnetes ruckeri | 2 | 1 | 1 |
| Acorn Woodpecker Melanerpes formicivorus | Black-cheeked Woodpecker Melanerpes pucherani | 2 | 1 | 1 |
| Lesser Elaenia Elaenia chiriquensis | Mistletoe Tyrannulet Zimmerius parvus | 2 | 1 | 1 |
| Black-headed Saltator Saltator atriceps | Slate-coloured Grosbeak Saltator grossus | 2 | 0 | 2 |
| Mountain Elaenia Elaenia frantzii | Torrent Tyrannulet Serpophaga cinerea | 2 | 1 | 1 |
| Golden-naped Woodpecker Melanerpes chrysauchen | Black-cheeked Woodpecker Melanerpes pucherani | 2 | 1 | 1 |
| Mountain Elaenia Elaenia frantzii | Mistletoe Tyrannulet Zimmerius parvus | 2 | 1 | 1 |
| Mountain Elaenia Elaenia frantzii | Bran-coloured Flycatcher Myiophobus fasciatus | 2 | 2 | 0 |
| Black-cheeked Woodpecker Melanerpes pucherani | Hoffmann's Woodpecker Melanerpes hoffmannii | 2 | 1 | 1 |
| Smoky-brown Woodpecker Leuconotopicus fumigatus | Cinnamon Woodpecker Celeus loricatus | 2 | 1 | 1 |
| Tufted Flycatcher Mitrephanes phaeocercus | Ochraceous Pewee Contopus ochraceus | 2 | 1 | 1 |
| Olive-sided Flycatcher Contopus cooperi | Western Wood-Pewee Contopus sordidulus | 2 | 2 | 0 |
| Northern Tropical Pewee Contopus bogotensis | Yellow-bellied Flycatcher Empidonax flaviventris | 2 | 2 | 0 |
| Blue-vented Hummingbird Saucerottia hoffmanni | Blue-tailed Hummingbird Saucerottia cyanura | 2 | 2 | 0 |
| Eastern Wood-Pewee Contopus virens | Acadian Flycatcher Empidonax virescens | 2 | 2 | 0 |
| Eastern Wood-Pewee Contopus virens | Alder Flycatcher Empidonax alnorum | 2 | 2 | 0 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Acadian Flycatcher Empidonax virescens | 2 | 1 | 1 |
| Blue-vented Hummingbird Saucerottia hoffmanni | Snowy-bellied Hummingbird Saucerottia edward | 2 | 1 | 1 |
| Acadian Flycatcher Empidonax virescens | Alder Flycatcher Empidonax alnorum | 2 | 1 | 1 |
| Acadian Flycatcher Empidonax virescens | Willow Flycatcher Empidonax traillii | 2 | 1 | 1 |
| Collared Forest-Falcon Micrastur semitorquatus | Slaty-backed Forest-Falcon Micrastur mirandollei | 2 | 0 | 2 |
| Alder Flycatcher Empidonax alnorum | Willow Flycatcher Empidonax traillii | 2 | 0 | 2 |
| Magnificent Frigatebird Fregata magnificens | Great Frigatebird Fregata minor | 2 | 0 | 2 |
| American Kestrel Falco sparverius | Bat Falcon Falco rufigularis | 2 | 0 | 2 |
| Mangrove Cuckoo Coccyzus minor | Black-billed Cuckoo Coccyzus erythropthalmus | 2 | 1 | 1 |
| Barred Parakeet Bolborhynchus lineola | Orange-chinned Parakeet Brotogeris jugularis | 2 | 1 | 1 |
| Marbled Wood-Quail Odontophorus gujanensis | Spotted Wood-Quail Odontophorus guttatus | 2 | 0 | 2 |
| Northern Scrub-Flycatcher Sublegatus arenarum | Bright-rumped Attila Attila spadiceus | 2 | 2 | 0 |
| Red-footed Booby Sula sula | Nazca Booby Sula granti | 2 | 2 | 0 |
| Violaceous Quail-Dove Geotrygon violacea | Olive-backed Quail-Dove Leptotrygon veraguensis | 2 | 0 | 2 |
| Brown-hooded Parrot Pyrilia haematotis | White-crowned Parrot Pionus senilis | 2 | 1 | 1 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Panama Flycatcher Myiarchus panamensis | 2 | 0 | 2 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Great Crested Flycatcher Myiarchus crinitus | 2 | 0 | 2 |
| Masked Booby Sula dactylatra | Nazca Booby Sula granti | 2 | 0 | 2 |
| Short-tailed Nighthawk Lurocalis semitorquatus | Common Pauraque Nyctidromus albicollis | 2 | 2 | 0 |
| Common Ground Dove Columbina passerina | Ruddy Ground Dove Columbina talpacoti | 2 | 1 | 1 |
| Mangrove Hummingbird Chrysuronia boucardi | Blue-throated Goldentail Chlorestes eliciae | 2 | 2 | 0 |
| Yellow-naped Amazon Amazona auropalliata | Mealy Amazon Amazona farinosa | 2 | 2 | 0 |
| Mealy Amazon Amazona farinosa | Sulphur-winged Parakeet Pyrrhura hoffmanni | 2 | 2 | 0 |
| Black-breasted Wood-Quail Odontophorus leucolaemus | Spotted Wood-Quail Odontophorus guttatus | 2 | 2 | 0 |
| White-ringed Flycatcher Conopias albovittatus | Golden-bellied Flycatcher Myiodynastes hemichrysus | 2 | 2 | 0 |
| Piratic Flycatcher Legatus leucophaius | Western Kingbird Tyrannus verticalis | 2 | 1 | 1 |
| Olive-throated Parakeet Eupsittula nana | Brown-throated Parakeet Eupsittula pertinax | 2 | 0 | 2 |
| Tropical Kingbird Tyrannus melancholicus | Western Kingbird Tyrannus verticalis | 2 | 0 | 2 |
| Brown-throated Parakeet Eupsittula pertinax | Great Green Macaw Ara ambiguus | 2 | 1 | 1 |
| Western Kingbird Tyrannus verticalis | Eastern Kingbird Tyrannus tyrannus | 2 | 1 | 1 |
| Blue-chested Hummingbird Polyerata amabilis | Blue-throated Goldentail Chlorestes eliciae | 2 | 1 | 1 |
| Eastern Kingbird Tyrannus tyrannus | Scissor-tailed Flycatcher Tyrannus forficatus | 2 | 2 | 0 |
| Common Pauraque Nyctidromus albicollis | Chuck-will's-widow Antrostomus carolinensis | 2 | 1 | 1 |
| Scrub Greenlet Hylophilus flavipes | Tawny-crowned Greenlet Tunchiornis ochraceiceps | 2 | 0 | 2 |
| Green Shrike-Vireo Vireolanius pulchellus | Lesser Greenlet Pachysylvia decurtata | 2 | 2 | 0 |
| Tawny-crowned Greenlet Tunchiornis ochraceiceps | Yellow-throated Vireo Vireo flavifrons | 2 | 0 | 2 |
| Little Blue Heron Egretta caerulea | Tricoloured Heron Egretta tricolor | 2 | 1 | 1 |
| Lesser Greenlet Pachysylvia decurtata | Yellow-throated Vireo Vireo flavifrons | 2 | 0 | 2 |
| Barred Antshrike Thamnophilus doliatus | Black-crowned Antshrike Thamnophilus atrinucha | 2 | 1 | 1 |
| Lesser Greenlet Pachysylvia decurtata | Red-eyed Vireo Vireo olivaceus | 2 | 0 | 2 |
| Yellow-throated Vireo Vireo flavifrons | Yellow-winged Vireo Vireo carmioli | 2 | 0 | 2 |
| Yellow-throated Vireo Vireo flavifrons | Philadelphia Vireo Vireo philadelphicus | 2 | 2 | 0 |
| Black-hooded Antshrike Thamnophilus bridgesi | Russet Antshrike Thamnistes anabatinus | 2 | 1 | 1 |
| Philadelphia Vireo Vireo philadelphicus | Red-eyed Vireo Vireo olivaceus | 2 | 0 | 2 |
| White-crested Coquette Lophornis adorabilis | Talamanca Hummingbird Eugenes spectabilis | 2 | 2 | 0 |
| Russet Antshrike Thamnistes anabatinus | Plain Antvireo Dysithamnus mentalis | 2 | 1 | 1 |
| Red-eyed Vireo Vireo olivaceus | Yellow-green Vireo Vireo flavoviridis | 2 | 0 | 2 |
| Silvery-throated Jay Cyanolyca argentigula | White-throated Magpie-Jay Cyanocorax formosus | 2 | 1 | 1 |
| Plain Antvireo Dysithamnus mentalis | Streak-crowned Antvireo Dysithamnus striaticeps | 2 | 1 | 1 |
| Sand Martin Riparia riparia | Mangrove Swallow Tachycineta albilinea | 2 | 2 | 0 |
| Great White Egret Ardea alba | Great Blue Heron Ardea herodias | 2 | 1 | 1 |
| Mangrove Swallow Tachycineta albilinea | Grey-breasted Martin Progne chalybea | 2 | 2 | 0 |
| Purple Martin Progne subis | Grey-breasted Martin Progne chalybea | 2 | 2 | 0 |
| Streak-crowned Antvireo Dysithamnus striaticeps | Checker-throated Stipplethroat Epinecrophylla fulviventris | 2 | 1 | 1 |
| Purple Martin Progne subis | Southern Rough-winged Swallow Stelgidopteryx ruficollis | 2 | 2 | 0 |
| Spot-crowned Antvireo Dysithamnus puncticeps | Checker-throated Stipplethroat Epinecrophylla fulviventris | 2 | 1 | 1 |
| Grey-breasted Martin Progne chalybea | Southern Rough-winged Swallow Stelgidopteryx ruficollis | 2 | 1 | 1 |
| Double-striped Thick-knee Hesperoburhinus bistriatus | Killdeer Charadrius vociferus | 2 | 0 | 2 |
| Slaty Antwren Myrmotherula schisticolor | Dusky Antbird Cercomacroides tyrannina | 2 | 0 | 2 |
| White-tipped Dove Leptotila verreauxi | Mourning Dove Zenaida macroura | 2 | 2 | 0 |
| Dot-winged Antwren Microrhopias quixensis | Chestnut-backed Antbird Poliocrania exsul | 2 | 2 | 0 |
| Long-billed Gnatwren Ramphocaenus melanurus | White-browed Gnatcatcher Polioptila bilineata | 2 | 0 | 2 |
| Dusky Antbird Cercomacroides tyrannina | Bicoloured Antbird Gymnopithys bicolor | 2 | 0 | 2 |
| Long-billed Starthroat Heliomaster longirostris | Fiery-throated Hummingbird Panterpe insignis | 2 | 2 | 0 |
| Chestnut-backed Antbird Poliocrania exsul | Dull-mantled Antbird Sipia laemosticta | 2 | 0 | 2 |
| White-browed Gnatcatcher Polioptila bilineata | White-lored Gnatcatcher Polioptila albiloris | 2 | 2 | 0 |
| Chestnut-backed Antbird Poliocrania exsul | Zeledon's Antbird Hafferia zeledoni | 2 | 0 | 2 |
| Rock Wren Salpinctes obsoletus | Scaly-breasted Wren Microcerculus marginatus | 2 | 0 | 2 |
| Nightingale Wren Microcerculus philomela | Ochraceous Wren Troglodytes ochraceus | 2 | 2 | 0 |
| Grey-chested Dove Leptotila cassinii | Grey-headed Dove Leptotila plumbeiceps | 2 | 2 | 0 |
| Northern House Wren Troglodytes aedon | Ochraceous Wren Troglodytes ochraceus | 2 | 1 | 1 |
| Great Potoo Nyctibius grandis | Northern Potoo Nyctibius jamaicensis | 2 | 0 | 2 |
| Timberline Wren Thryorchilus browni | Rufous-naped Wren Campylorhynchus rufinucha | 2 | 2 | 0 |
| Band-backed Wren Campylorhynchus zonatus | Rufous-naped Wren Campylorhynchus rufinucha | 2 | 0 | 2 |
| Band-backed Wren Campylorhynchus zonatus | Rufous-breasted Wren Pheugopedius rutilus | 2 | 2 | 0 |
| Grey-headed Dove Leptotila plumbeiceps | Purplish-backed Quail-Dove Zentrygon lawrencii | 2 | 0 | 2 |
| Fiery-throated Hummingbird Panterpe insignis | Purple-throated Mountain-gem Lampornis calolaemus | 2 | 2 | 0 |
| Black-bellied Wren Pheugopedius fasciatoventris | Banded Wren Thryophilus pleurostictus | 2 | 2 | 0 |
| Harpy Eagle Harpia harpyja | Ornate Hawk-Eagle Spizaetus ornatus | 2 | 0 | 2 |
| Whimbrel Numenius phaeopus | Marbled Godwit Limosa fedoa | 2 | 2 | 0 |
| Black Swift Cypseloides niger | Spot-fronted Swift Cypseloides cherriei | 2 | 2 | 0 |
| Banded Wren Thryophilus pleurostictus | Rufous-and-white Wren Thryophilus rufalbus | 2 | 1 | 1 |
| Banded Wren Thryophilus pleurostictus | Cabanis's Wren Cantorchilus modestus | 2 | 2 | 0 |
| Tiny Hawk Microspizias superciliosus | Double-toothed Kite Harpagus bidentatus | 2 | 2 | 0 |
| Rufous-and-white Wren Thryophilus rufalbus | Cabanis's Wren Cantorchilus modestus | 2 | 2 | 0 |
| Cabanis's Wren Cantorchilus modestus | Canebrake Wren Cantorchilus zeledoni | 2 | 2 | 0 |
| Canebrake Wren Cantorchilus zeledoni | Isthmian Wren Cantorchilus elutus | 2 | 1 | 1 |
| Middle American Leaftosser Sclerurus mexicanus | Olivaceous Woodcreeper Sittasomus griseicapillus | 2 | 2 | 0 |
| White-bellied Mountain-gem Lampornis hemileucus | Magenta-throated Woodstar Philodice bryantae | 2 | 2 | 0 |
| Riverside Wren Cantorchilus semibadius | Grey-breasted Wood-Wren Henicorhina leucophrys | 2 | 1 | 1 |
| Buff-fronted Quail-Dove Zentrygon costaricensis | Purplish-backed Quail-Dove Zentrygon lawrencii | 2 | 2 | 0 |
| Black-faced Solitaire Myadestes melanops | Orange-billed Nightingale-Thrush Catharus aurantiirostris | 2 | 2 | 0 |
| Olivaceous Woodcreeper Sittasomus griseicapillus | Buffy Tuftedcheek Pseudocolaptes lawrencii | 2 | 0 | 2 |
| Purplish-backed Quail-Dove Zentrygon lawrencii | Chiriqui Quail-Dove Zentrygon chiriquensis | 2 | 1 | 1 |
| Orange-billed Nightingale-Thrush Catharus aurantiirostris | Ruddy-capped Nightingale-Thrush Catharus frantzii | 2 | 2 | 0 |
| Slaty-backed Nightingale-Thrush Catharus fuscater | Black-headed Nightingale-Thrush Catharus mexicanus | 2 | 1 | 1 |
| Smooth-billed Ani Crotophaga ani | Groove-billed Ani Crotophaga sulcirostris | 2 | 1 | 1 |
| Grey-cheeked Thrush Catharus minimus | Swainson's Thrush Catharus ustulatus | 2 | 2 | 0 |
| Tawny-winged Woodcreeper Dendrocincla anabatina | Plain-brown Woodcreeper Dendrocincla fuliginosa | 2 | 2 | 0 |
| Wilson's Snipe Gallinago delicata | Wilson's Phalarope Phalaropus tricolor | 2 | 0 | 2 |
| White-chinned Swift Cypseloides cryptus | Spot-fronted Swift Cypseloides cherriei | 2 | 2 | 0 |
| Crane Hawk Geranospiza caerulescens | Great Black Hawk Buteogallus urubitinga | 2 | 2 | 0 |
| Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | Cocoa Woodcreeper Xiphorhynchus susurrans | 2 | 0 | 2 |
| Wilson's Phalarope Phalaropus tricolor | Red-necked Phalarope Phalaropus lobatus | 2 | 1 | 1 |
| Black-and-yellow Silky-flycatcher Phainoptila melanoxantha | Long-tailed Silky-flycatcher Ptiliogonys caudatus | 2 | 1 | 1 |
| Cocoa Woodcreeper Xiphorhynchus susurrans | Streak-headed Woodcreeper Lepidocolaptes souleyetii | 2 | 2 | 0 |
| Golden-browed Chlorophonia Chlorophonia callophrys | Yellow-crowned Euphonia Euphonia luteicapilla | 2 | 1 | 1 |
| Ivory-billed Woodcreeper Xiphorhynchus flavigaster | Black-striped Woodcreeper Xiphorhynchus lachrymosus | 2 | 1 | 1 |
| Scrub Euphonia Euphonia affinis | Yellow-throated Euphonia Euphonia hirundinacea | 2 | 2 | 0 |
| Scrub Euphonia Euphonia affinis | Thick-billed Euphonia Euphonia laniirostris | 2 | 2 | 0 |
| Black-striped Woodcreeper Xiphorhynchus lachrymosus | Streak-headed Woodcreeper Lepidocolaptes souleyetii | 2 | 2 | 0 |
| Spotted Woodcreeper Xiphorhynchus erythropygius | Spot-crowned Woodcreeper Lepidocolaptes affinis | 2 | 0 | 2 |
| Streak-headed Woodcreeper Lepidocolaptes souleyetii | Spot-crowned Woodcreeper Lepidocolaptes affinis | 2 | 1 | 1 |
| Spot-fronted Swift Cypseloides cherriei | Costa Rican Swift Chaetura fumosa | 2 | 2 | 0 |
| Yellow-throated Euphonia Euphonia hirundinacea | Spot-crowned Euphonia Euphonia imitans | 2 | 1 | 1 |
| Spot-crowned Woodcreeper Lepidocolaptes affinis | Buffy Tuftedcheek Pseudocolaptes lawrencii | 2 | 2 | 0 |
| Thick-billed Euphonia Euphonia laniirostris | Spot-crowned Euphonia Euphonia imitans | 2 | 0 | 2 |
| Plain Xenops Xenops minutus | Buffy Tuftedcheek Pseudocolaptes lawrencii | 2 | 2 | 0 |
| Spot-crowned Euphonia Euphonia imitans | Tawny-capped Euphonia Euphonia anneae | 2 | 2 | 0 |
| Buffy Tuftedcheek Pseudocolaptes lawrencii | Buff-fronted Foliage-gleaner Dendroma rufa | 2 | 2 | 0 |
| Blue Ground Dove Claravis pretiosa | Maroon-chested Ground Dove Paraclaravis mondetoura | 2 | 0 | 2 |
| Buffy Tuftedcheek Pseudocolaptes lawrencii | Chiriqui Foliage-gleaner Automolus exsertus | 2 | 2 | 0 |
| Lesser Goldfinch Spinus psaltria | Yellow-bellied Siskin Spinus xanthogastrus | 2 | 1 | 1 |
| Magenta-throated Woodstar Philodice bryantae | Ruby-throated Hummingbird Archilochus colubris | 2 | 1 | 1 |
| Lesser Yellowlegs Tringa flavipes | Greater Yellowlegs Tringa melanoleuca | 2 | 1 | 1 |
| Stripe-headed Sparrow Peucaea ruficauda | Olive Sparrow Arremonops rufivirgatus | 2 | 0 | 2 |
| Sanderling Calidris alba | Least Sandpiper Calidris minutilla | 2 | 0 | 2 |
| Fawn-throated Foliage-gleaner Automolus cervinigularis | Chiriqui Foliage-gleaner Automolus exsertus | 2 | 0 | 2 |
| Grey Hawk Buteo plagiatus | Grey-lined Hawk Buteo nitidus | 2 | 2 | 0 |
| Spotted Barbtail Premnoplex brunnescens | Ruddy Treerunner Margarornis rubiginosus | 2 | 0 | 2 |
| Sanderling Calidris alba | Western Sandpiper Calidris mauri | 2 | 0 | 2 |
| Grey Hawk Buteo plagiatus | Swainson's Hawk Buteo swainsoni | 2 | 2 | 0 |
| Broad-winged Hawk Buteo platypterus | Short-tailed Hawk Buteo brachyurus | 2 | 1 | 1 |
| Ruddy Treerunner Margarornis rubiginosus | Slaty Spinetail Synallaxis brachyura | 2 | 1 | 1 |
| Ruddy Treerunner Margarornis rubiginosus | Pale-breasted Spinetail Synallaxis albescens | 2 | 1 | 1 |
| Red-faced Spinetail Cranioleuca erythrops | Slaty Spinetail Synallaxis brachyura | 2 | 1 | 1 |
| Red-faced Spinetail Cranioleuca erythrops | Pale-breasted Spinetail Synallaxis albescens | 2 | 1 | 1 |
| Slaty Spinetail Synallaxis brachyura | Pale-breasted Spinetail Synallaxis albescens | 2 | 0 | 2 |
| Lance-tailed Manakin Chiroxiphia lanceolata | Long-tailed Manakin Chiroxiphia linearis | 2 | 1 | 1 |
| Long-tailed Manakin Chiroxiphia linearis | Velvety Manakin Lepidothrix velutina | 2 | 2 | 0 |
| Crested Oropendola Psarocolius decumanus | Chestnut-headed Oropendola Psarocolius wagleri | 2 | 2 | 0 |
| White-ruffed Manakin Corapipo altera | Velvety Manakin Lepidothrix velutina | 2 | 2 | 0 |
| Black-cowled Oriole Icterus prosthemelas | Orchard Oriole Icterus spurius | 2 | 0 | 2 |
| Swainson's Hawk Buteo swainsoni | Zone-tailed Hawk Buteo albonotatus | 2 | 1 | 1 |
| Purple-throated Fruitcrow Querula purpurata | Turquoise Cotinga Cotinga ridgwayi | 1 | 0 | 1 |
| Purple-throated Fruitcrow Querula purpurata | Three-wattled Bellbird Procnias tricarunculatus | 1 | 1 | 0 |
| Lovely Cotinga Cotinga amabilis | Three-wattled Bellbird Procnias tricarunculatus | 1 | 1 | 0 |
| Turquoise Cotinga Cotinga ridgwayi | Variable Seedeater Sporophila corvina | 1 | 1 | 0 |
| Yellow-billed Cotinga Carpodectes antoniae | Snowy Cotinga Carpodectes nitidus | 1 | 1 | 0 |
| Masked Tityra Tityra semifasciata | Common Tody-Flycatcher Todirostrum cinereum | 1 | 1 | 0 |
| Masked Tityra Tityra semifasciata | Buff-throated Saltator Saltator maximus | 1 | 0 | 1 |
| Northern Schiffornis Schiffornis veraepacis | Cinnamon Becard Pachyramphus cinnamomeus | 1 | 1 | 0 |
| Speckled Mourner Laniocera rufescens | Barred Becard Pachyramphus versicolor | 1 | 0 | 1 |
| Speckled Mourner Laniocera rufescens | Cinnamon Becard Pachyramphus cinnamomeus | 1 | 1 | 0 |
| Barred Becard Pachyramphus versicolor | Cinnamon Becard Pachyramphus cinnamomeus | 1 | 1 | 0 |
| Barred Becard Pachyramphus versicolor | Black-and-white Becard Pachyramphus albogriseus | 1 | 0 | 1 |
| Barred Becard Pachyramphus versicolor | Bay-headed Tanager Tangara gyrola | 1 | 1 | 0 |
| Barred Becard Pachyramphus versicolor | Streaked Saltator Saltator striatipectus | 1 | 0 | 1 |
| Cinnamon Becard Pachyramphus cinnamomeus | White-winged Becard Pachyramphus polychopterus | 1 | 1 | 0 |
| Cinnamon Becard Pachyramphus cinnamomeus | Rose-throated Becard Pachyramphus aglaiae | 1 | 0 | 1 |
| Cinnamon Becard Pachyramphus cinnamomeus | Chestnut-capped Warbler Basileuterus delattrii | 1 | 1 | 0 |
| Sulphur-rumped Flycatcher Myiobius sulphureipygius | Grey-headed Piprites Piprites griseiceps | 1 | 0 | 1 |
| Grey-headed Piprites Piprites griseiceps | Stub-tailed Spadebill Platyrinchus cancrominus | 1 | 1 | 0 |
| Stub-tailed Spadebill Platyrinchus cancrominus | Golden-crowned Spadebill Platyrinchus coronatus | 1 | 0 | 1 |
| White-throated Spadebill Platyrinchus mystaceus | Olive-streaked Flycatcher Mionectes olivaceus | 1 | 1 | 0 |
| White-throated Spadebill Platyrinchus mystaceus | Ochre-bellied Flycatcher Mionectes oleagineus | 1 | 0 | 1 |
| White-throated Spadebill Platyrinchus mystaceus | Slate-throated Redstart Myioborus miniatus | 1 | 1 | 0 |
| Olive-streaked Flycatcher Mionectes olivaceus | Slaty-capped Flycatcher Leptopogon superciliaris | 1 | 0 | 1 |
| Olive-streaked Flycatcher Mionectes olivaceus | Sulphur-bellied Flycatcher Myiodynastes luteiventris | 1 | 0 | 1 |
| Ochre-bellied Flycatcher Mionectes oleagineus | Sepia-capped Flycatcher Leptopogon amaurocephalus | 1 | 1 | 0 |
| Ochre-bellied Flycatcher Mionectes oleagineus | Blue-grey Tanager Thraupis episcopus | 1 | 1 | 0 |
| Ochre-bellied Flycatcher Mionectes oleagineus | Black-and-yellow Tanager Chrysothlypis chrysomelas | 1 | 0 | 1 |
| Sepia-capped Flycatcher Leptopogon amaurocephalus | Slaty-capped Flycatcher Leptopogon superciliaris | 1 | 0 | 1 |
| Slaty-capped Flycatcher Leptopogon superciliaris | Tropical Parula Setophaga pitiayumi | 1 | 0 | 1 |
| Rufous-browed Tyrannulet Phylloscartes superciliaris | Common Chlorospingus Chlorospingus flavopectus | 1 | 1 | 0 |
| Black-capped Pygmy-Tyrant Myiornis atricapillus | Northern Bentbill Oncostoma cinereigulare | 1 | 1 | 0 |
| Black-capped Pygmy-Tyrant Myiornis atricapillus | Slate-headed Tody-Flycatcher Poecilotriccus sylvia | 1 | 1 | 0 |
| Black-capped Pygmy-Tyrant Myiornis atricapillus | Yellow-bellied Elaenia Elaenia flavogaster | 1 | 0 | 1 |
| Scale-crested Pygmy-Tyrant Lophotriccus pileatus | Northern Bentbill Oncostoma cinereigulare | 1 | 1 | 0 |
| Northern Bentbill Oncostoma cinereigulare | Common Tody-Flycatcher Todirostrum cinereum | 1 | 1 | 0 |
| Common Tody-Flycatcher Todirostrum cinereum | Lesser Greenlet Pachysylvia decurtata | 1 | 1 | 0 |
| Common Tody-Flycatcher Todirostrum cinereum | White-browed Gnatcatcher Polioptila bilineata | 1 | 1 | 0 |
| Common Tody-Flycatcher Todirostrum cinereum | Buff-throated Saltator Saltator maximus | 1 | 0 | 1 |
| Eye-ringed Flatbill Rhynchocyclus brevirostris | Yellow-olive Flatbill Tolmomyias sulphurescens | 1 | 1 | 0 |
| Eye-ringed Flatbill Rhynchocyclus brevirostris | Yellow-winged Flatbill Tolmomyias flavotectus | 1 | 0 | 1 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Brown-capped Tyrannulet Ornithion brunneicapillus | 1 | 0 | 1 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Northern Beardless-Tyrannulet Camptostoma imberbe | 1 | 1 | 0 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Clay-coloured Thrush Turdus grayi | 1 | 0 | 1 |
| Yellow-winged Flatbill Tolmomyias flavotectus | Brown-capped Tyrannulet Ornithion brunneicapillus | 1 | 0 | 1 |
| Brown-capped Tyrannulet Ornithion brunneicapillus | Southern Beardless-Tyrannulet Camptostoma obsoletum | 1 | 1 | 0 |
| Brown-capped Tyrannulet Ornithion brunneicapillus | Tropical Kingbird Tyrannus melancholicus | 1 | 1 | 0 |
| Brown-capped Tyrannulet Ornithion brunneicapillus | Rufous-breasted Wren Pheugopedius rutilus | 1 | 0 | 1 |
| Brown-capped Tyrannulet Ornithion brunneicapillus | Chestnut-sided Warbler Setophaga pensylvanica | 1 | 1 | 0 |
| Northern Beardless-Tyrannulet Camptostoma imberbe | Cocos Tyrannulet Nesotriccus ridgwayi | 1 | 1 | 0 |
| Southern Beardless-Tyrannulet Camptostoma obsoletum | Northern Mouse-coloured Tyrannulet Nesotriccus incomtus | 1 | 1 | 0 |
| Southern Beardless-Tyrannulet Camptostoma obsoletum | Yellow Tyrannulet Capsiempis flaveola | 1 | 1 | 0 |
| Northern Mouse-coloured Tyrannulet Nesotriccus incomtus | Yellow Tyrannulet Capsiempis flaveola | 1 | 1 | 0 |
| Cocos Tyrannulet Nesotriccus ridgwayi | Yellow Tyrannulet Capsiempis flaveola | 1 | 1 | 0 |
| Cocos Tyrannulet Nesotriccus ridgwayi | Yellow-crowned Tyrannulet Tyrannulus elatus | 1 | 1 | 0 |
| Cocos Tyrannulet Nesotriccus ridgwayi | Greenish Elaenia Myiopagis viridicata | 1 | 1 | 0 |
| Yellow Tyrannulet Capsiempis flaveola | Greenish Elaenia Myiopagis viridicata | 1 | 0 | 1 |
| Yellow Tyrannulet Capsiempis flaveola | Yellow-bellied Siskin Spinus xanthogastrus | 1 | 0 | 1 |
| Yellow-crowned Tyrannulet Tyrannulus elatus | Greenish Elaenia Myiopagis viridicata | 1 | 0 | 1 |
| Yellow-bellied Elaenia Elaenia flavogaster | Lesser Elaenia Elaenia chiriquensis | 1 | 1 | 0 |
| Yellow-bellied Elaenia Elaenia flavogaster | Scrub Euphonia Euphonia affinis | 1 | 0 | 1 |
| Yellow-bellied Elaenia Elaenia flavogaster | Yellow-crowned Euphonia Euphonia luteicapilla | 1 | 1 | 0 |
| Yellow-bellied Elaenia Elaenia flavogaster | Buff-throated Saltator Saltator maximus | 1 | 1 | 0 |
| Lesser Elaenia Elaenia chiriquensis | Torrent Tyrannulet Serpophaga cinerea | 1 | 1 | 0 |
| Lesser Elaenia Elaenia chiriquensis | Bran-coloured Flycatcher Myiophobus fasciatus | 1 | 1 | 0 |
| Mountain Elaenia Elaenia frantzii | White-fronted Tyrannulet Acrochordopus zeledoni | 1 | 0 | 1 |
| Bran-coloured Flycatcher Myiophobus fasciatus | Rusty-margined Flycatcher Myiozetetes cayanensis | 1 | 0 | 1 |
| Tawny-chested Flycatcher Aphanotriccus capitalis | Tufted Flycatcher Mitrephanes phaeocercus | 1 | 1 | 0 |
| Tawny-chested Flycatcher Aphanotriccus capitalis | Olive-sided Flycatcher Contopus cooperi | 1 | 1 | 0 |
| Tawny-chested Flycatcher Aphanotriccus capitalis | Ochraceous Pewee Contopus ochraceus | 1 | 1 | 0 |
| Olive-sided Flycatcher Contopus cooperi | White-vented Euphonia Euphonia minuta | 1 | 1 | 0 |
| Eastern Wood-Pewee Contopus virens | Yellow-bellied Flycatcher Empidonax flaviventris | 1 | 1 | 0 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Alder Flycatcher Empidonax alnorum | 1 | 1 | 0 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Willow Flycatcher Empidonax traillii | 1 | 1 | 0 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Buff-rumped Warbler Myiothlypis fulvicauda | 1 | 0 | 1 |
| Acadian Flycatcher Empidonax virescens | Yellowish Flycatcher Empidonax flavescens | 1 | 1 | 0 |
| Acadian Flycatcher Empidonax virescens | Black-capped Flycatcher Empidonax atriceps | 1 | 1 | 0 |
| Alder Flycatcher Empidonax alnorum | Least Flycatcher Empidonax minimus | 1 | 1 | 0 |
| Willow Flycatcher Empidonax traillii | White-throated Flycatcher Empidonax albigularis | 1 | 0 | 1 |
| Willow Flycatcher Empidonax traillii | Yellowish Flycatcher Empidonax flavescens | 1 | 1 | 0 |
| White-throated Flycatcher Empidonax albigularis | Black-capped Flycatcher Empidonax atriceps | 1 | 1 | 0 |
| White-throated Flycatcher Empidonax albigularis | Cedar Waxwing Bombycilla cedrorum | 1 | 1 | 0 |
| Black-capped Flycatcher Empidonax atriceps | Black Phoebe Sayornis nigricans | 1 | 0 | 1 |
| Black-capped Flycatcher Empidonax atriceps | Northern Scrub-Flycatcher Sublegatus arenarum | 1 | 1 | 0 |
| Black-capped Flycatcher Empidonax atriceps | Bright-rumped Attila Attila spadiceus | 1 | 1 | 0 |
| Bright-rumped Attila Attila spadiceus | Rufous Mourner Rhytipterna holerythra | 1 | 0 | 1 |
| Bright-rumped Attila Attila spadiceus | Dusky-capped Flycatcher Myiarchus tuberculifer | 1 | 1 | 0 |
| Bright-rumped Attila Attila spadiceus | Nutting's Flycatcher Myiarchus nuttingi | 1 | 1 | 0 |
| Bright-rumped Attila Attila spadiceus | Lesser Goldfinch Spinus psaltria | 1 | 1 | 0 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Brown-crested Flycatcher Myiarchus tyrannulus | 1 | 1 | 0 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Golden-bellied Flycatcher Myiodynastes hemichrysus | 1 | 0 | 1 |
| Panama Flycatcher Myiarchus panamensis | Nutting's Flycatcher Myiarchus nuttingi | 1 | 1 | 0 |
| Panama Flycatcher Myiarchus panamensis | Brown-crested Flycatcher Myiarchus tyrannulus | 1 | 1 | 0 |
| Nutting's Flycatcher Myiarchus nuttingi | Great Crested Flycatcher Myiarchus crinitus | 1 | 1 | 0 |
| Brown-crested Flycatcher Myiarchus tyrannulus | Boat-billed Flycatcher Megarynchus pitangua | 1 | 1 | 0 |
| Brown-crested Flycatcher Myiarchus tyrannulus | Rusty-margined Flycatcher Myiozetetes cayanensis | 1 | 1 | 0 |
| Brown-crested Flycatcher Myiarchus tyrannulus | Rock Wren Salpinctes obsoletus | 1 | 0 | 1 |
| Great Kiskadee Pitangus sulphuratus | Rusty-margined Flycatcher Myiozetetes cayanensis | 1 | 1 | 0 |
| Rusty-margined Flycatcher Myiozetetes cayanensis | Social Flycatcher Myiozetetes similis | 1 | 0 | 1 |
| Rusty-margined Flycatcher Myiozetetes cayanensis | White-ringed Flycatcher Conopias albovittatus | 1 | 1 | 0 |
| Social Flycatcher Myiozetetes similis | White-ringed Flycatcher Conopias albovittatus | 1 | 0 | 1 |
| Social Flycatcher Myiozetetes similis | White-browed Gnatcatcher Polioptila bilineata | 1 | 1 | 0 |
| Social Flycatcher Myiozetetes similis | Blue-black Grassquit Volatinia jacarina | 1 | 1 | 0 |
| Piratic Flycatcher Legatus leucophaius | Scissor-tailed Flycatcher Tyrannus forficatus | 1 | 0 | 1 |
| Tropical Kingbird Tyrannus melancholicus | Buff-throated Saltator Saltator maximus | 1 | 1 | 0 |
| Western Kingbird Tyrannus verticalis | Grey Kingbird Tyrannus dominicensis | 1 | 0 | 1 |
| Fork-tailed Flycatcher Tyrannus savana | Buff-rumped Warbler Myiothlypis fulvicauda | 1 | 0 | 1 |
| Rufous-browed Peppershrike Cyclarhis gujanensis | Tawny-crowned Greenlet Tunchiornis ochraceiceps | 1 | 1 | 0 |
| Scrub Greenlet Hylophilus flavipes | Green Shrike-Vireo Vireolanius pulchellus | 1 | 0 | 1 |
| Tawny-crowned Greenlet Tunchiornis ochraceiceps | Banded Wren Thryophilus pleurostictus | 1 | 1 | 0 |
| Lesser Greenlet Pachysylvia decurtata | White-eyed Vireo Vireo griseus | 1 | 0 | 1 |
| Lesser Greenlet Pachysylvia decurtata | Yellow-winged Vireo Vireo carmioli | 1 | 1 | 0 |
| Lesser Greenlet Pachysylvia decurtata | Swainson's Thrush Catharus ustulatus | 1 | 1 | 0 |
| Lesser Greenlet Pachysylvia decurtata | Buff-throated Saltator Saltator maximus | 1 | 1 | 0 |
| White-eyed Vireo Vireo griseus | Mangrove Vireo Vireo pallens | 1 | 0 | 1 |
| Mangrove Vireo Vireo pallens | Yellow-throated Vireo Vireo flavifrons | 1 | 0 | 1 |
| Yellow-throated Vireo Vireo flavifrons | Yellow-green Vireo Vireo flavoviridis | 1 | 0 | 1 |
| Yellow-winged Vireo Vireo carmioli | Blue-headed Vireo Vireo solitarius | 1 | 0 | 1 |
| Yellow-winged Vireo Vireo carmioli | Yellow-green Vireo Vireo flavoviridis | 1 | 1 | 0 |
| Philadelphia Vireo Vireo philadelphicus | Warbling Vireo Vireo gilvus | 1 | 0 | 1 |
| Philadelphia Vireo Vireo philadelphicus | Blackburnian Warbler Setophaga fusca | 1 | 1 | 0 |
| Brown-capped Vireo Vireo leucophrys | Yellow-green Vireo Vireo flavoviridis | 1 | 0 | 1 |
| Silvery-throated Jay Cyanolyca argentigula | Azure-hooded Jay Cyanolyca cucullata | 1 | 1 | 0 |
| Silvery-throated Jay Cyanolyca argentigula | Brown Jay Cyanocorax morio | 1 | 0 | 1 |
| Sand Martin Riparia riparia | Grey-breasted Martin Progne chalybea | 1 | 1 | 0 |
| Purple Martin Progne subis | Northern Rough-winged Swallow Stelgidopteryx serripennis | 1 | 1 | 0 |
| Grey-breasted Martin Progne chalybea | Southern Martin Progne elegans | 1 | 0 | 1 |
| Grey-breasted Martin Progne chalybea | Northern Rough-winged Swallow Stelgidopteryx serripennis | 1 | 1 | 0 |
| Northern Rough-winged Swallow Stelgidopteryx serripennis | Barn Swallow Hirundo rustica | 1 | 0 | 1 |
| Northern Rough-winged Swallow Stelgidopteryx serripennis | Cliff Swallow Petrochelidon pyrrhonota | 1 | 0 | 1 |
| Southern Rough-winged Swallow Stelgidopteryx ruficollis | Cliff Swallow Petrochelidon pyrrhonota | 1 | 0 | 1 |
| Cliff Swallow Petrochelidon pyrrhonota | Cave Swallow Petrochelidon fulva | 1 | 0 | 1 |
| Tawny-faced Gnatwren Microbates cinereiventris | Long-billed Gnatwren Ramphocaenus melanurus | 1 | 1 | 0 |
| Tawny-faced Gnatwren Microbates cinereiventris | White-browed Gnatcatcher Polioptila bilineata | 1 | 0 | 1 |
| Long-billed Gnatwren Ramphocaenus melanurus | White-lored Gnatcatcher Polioptila albiloris | 1 | 0 | 1 |
| Long-billed Gnatwren Ramphocaenus melanurus | White-eared Ground-Sparrow Melozone leucotis | 1 | 1 | 0 |
| Long-billed Gnatwren Ramphocaenus melanurus | Grey-headed Tanager Eucometis penicillata | 1 | 1 | 0 |
| White-browed Gnatcatcher Polioptila bilineata | Blue-grey Tanager Thraupis episcopus | 1 | 1 | 0 |
| Nightingale Wren Microcerculus philomela | Isthmian Wren Cantorchilus elutus | 1 | 0 | 1 |
| Scaly-breasted Wren Microcerculus marginatus | Ochraceous Wren Troglodytes ochraceus | 1 | 1 | 0 |
| Scaly-breasted Wren Microcerculus marginatus | Rufous-naped Wren Campylorhynchus rufinucha | 1 | 1 | 0 |
| Northern House Wren Troglodytes aedon | Timberline Wren Thryorchilus browni | 1 | 1 | 0 |
| Ochraceous Wren Troglodytes ochraceus | Rufous-naped Wren Campylorhynchus rufinucha | 1 | 1 | 0 |
| Ochraceous Wren Troglodytes ochraceus | Rufous-breasted Wren Pheugopedius rutilus | 1 | 1 | 0 |
| Rufous-naped Wren Campylorhynchus rufinucha | Black-bellied Wren Pheugopedius fasciatoventris | 1 | 0 | 1 |
| Rufous-naped Wren Campylorhynchus rufinucha | Rufous-breasted Wren Pheugopedius rutilus | 1 | 1 | 0 |
| Rufous-breasted Wren Pheugopedius rutilus | Spot-breasted Wren Pheugopedius maculipectus | 1 | 1 | 0 |
| Rufous-breasted Wren Pheugopedius rutilus | Banded Wren Thryophilus pleurostictus | 1 | 0 | 1 |
| Black-throated Wren Pheugopedius atrogularis | Rufous-and-white Wren Thryophilus rufalbus | 1 | 1 | 0 |
| Rufous-and-white Wren Thryophilus rufalbus | Stripe-breasted Wren Cantorchilus thoracicus | 1 | 0 | 1 |
| Rufous-and-white Wren Thryophilus rufalbus | Canebrake Wren Cantorchilus zeledoni | 1 | 1 | 0 |
| Stripe-breasted Wren Cantorchilus thoracicus | Canebrake Wren Cantorchilus zeledoni | 1 | 0 | 1 |
| Canebrake Wren Cantorchilus zeledoni | Bay Wren Cantorchilus nigricapillus | 1 | 1 | 0 |
| Isthmian Wren Cantorchilus elutus | Grey-breasted Wood-Wren Henicorhina leucophrys | 1 | 0 | 1 |
| Riverside Wren Cantorchilus semibadius | Bay Wren Cantorchilus nigricapillus | 1 | 0 | 1 |
| Riverside Wren Cantorchilus semibadius | White-breasted Wood-Wren Henicorhina leucosticta | 1 | 1 | 0 |
| Bay Wren Cantorchilus nigricapillus | Grey-breasted Wood-Wren Henicorhina leucophrys | 1 | 0 | 1 |
| White-breasted Wood-Wren Henicorhina leucosticta | Black-and-white Warbler Mniotilta varia | 1 | 0 | 1 |
| Grey Catbird Dumetella carolinensis | Northern Mockingbird Mimus polyglottos | 1 | 0 | 1 |
| Black-billed Nightingale-Thrush Catharus gracilirostris | Orange-billed Nightingale-Thrush Catharus aurantiirostris | 1 | 1 | 0 |
| Black-billed Nightingale-Thrush Catharus gracilirostris | Slaty-backed Nightingale-Thrush Catharus fuscater | 1 | 1 | 0 |
| Veery Catharus fuscescens | Swainson's Thrush Catharus ustulatus | 1 | 1 | 0 |
| Swainson's Thrush Catharus ustulatus | Wood Thrush Hylocichla mustelina | 1 | 1 | 0 |
| Wood Thrush Hylocichla mustelina | White-throated Thrush Turdus assimilis | 1 | 1 | 0 |
| Mountain Thrush Turdus plebejus | White-throated Thrush Turdus assimilis | 1 | 1 | 0 |
| Mountain Thrush Turdus plebejus | Sooty Thrush Turdus nigrescens | 1 | 0 | 1 |
| White-throated Thrush Turdus assimilis | Clay-coloured Thrush Turdus grayi | 1 | 1 | 0 |
| White-throated Thrush Turdus assimilis | Sooty Thrush Turdus nigrescens | 1 | 0 | 1 |
| Clay-coloured Thrush Turdus grayi | Black-and-yellow Silky-flycatcher Phainoptila melanoxantha | 1 | 0 | 1 |
| Clay-coloured Thrush Turdus grayi | Morelet's Seedeater Sporophila morelleti | 1 | 1 | 0 |
| Cedar Waxwing Bombycilla cedrorum | Black-and-yellow Silky-flycatcher Phainoptila melanoxantha | 1 | 1 | 0 |
| Long-tailed Silky-flycatcher Ptiliogonys caudatus | Black-cheeked Ant-Tanager Driophlox atrimaxillaris | 1 | 1 | 0 |
| Scrub Euphonia Euphonia affinis | Yellow-crowned Euphonia Euphonia luteicapilla | 1 | 1 | 0 |
| Yellow-crowned Euphonia Euphonia luteicapilla | White-vented Euphonia Euphonia minuta | 1 | 0 | 1 |
| Yellow-crowned Euphonia Euphonia luteicapilla | Yellow-throated Euphonia Euphonia hirundinacea | 1 | 0 | 1 |
| Yellow-crowned Euphonia Euphonia luteicapilla | Thick-billed Euphonia Euphonia laniirostris | 1 | 1 | 0 |
| Yellow-crowned Euphonia Euphonia luteicapilla | Bronzed Cowbird Molothrus aeneus | 1 | 1 | 0 |
| White-vented Euphonia Euphonia minuta | Yellow-throated Euphonia Euphonia hirundinacea | 1 | 0 | 1 |
| White-vented Euphonia Euphonia minuta | Costa Rican Warbler Basileuterus melanotis | 1 | 1 | 0 |
| Yellow-throated Euphonia Euphonia hirundinacea | Olive-backed Euphonia Euphonia gouldi | 1 | 1 | 0 |
| Thick-billed Euphonia Euphonia laniirostris | Tawny-capped Euphonia Euphonia anneae | 1 | 0 | 1 |
| Thick-billed Euphonia Euphonia laniirostris | Yellow-bellied Siskin Spinus xanthogastrus | 1 | 0 | 1 |
| Spot-crowned Euphonia Euphonia imitans | Slaty Finch Haplospiza rustica | 1 | 0 | 1 |
| Olive-backed Euphonia Euphonia gouldi | Lesser Goldfinch Spinus psaltria | 1 | 1 | 0 |
| Olive-backed Euphonia Euphonia gouldi | Yellow-bellied Siskin Spinus xanthogastrus | 1 | 1 | 0 |
| Lesser Goldfinch Spinus psaltria | Sooty-faced Finch Arremon crassirostris | 1 | 1 | 0 |
| Ashy-throated Chlorospingus Chlorospingus canigularis | Common Chlorospingus Chlorospingus flavopectus | 1 | 1 | 0 |
| Sooty-capped Chlorospingus Chlorospingus pileatus | Stripe-headed Sparrow Peucaea ruficauda | 1 | 1 | 0 |
| Sooty-capped Chlorospingus Chlorospingus pileatus | Black-striped Sparrow Arremonops conirostris | 1 | 1 | 0 |
| Common Chlorospingus Chlorospingus flavopectus | Stripe-headed Sparrow Peucaea ruficauda | 1 | 1 | 0 |
| Grasshopper Sparrow Ammodramus savannarum | Olive Sparrow Arremonops rufivirgatus | 1 | 0 | 1 |
| Clay-coloured Sparrow Spizella pallida | Lark Sparrow Chondestes grammacus | 1 | 0 | 1 |
| Costa Rican Brushfinch Arremon costaricensis | Orange-billed Sparrow Arremon aurantiirostris | 1 | 0 | 1 |
| Costa Rican Brushfinch Arremon costaricensis | Sooty-faced Finch Arremon crassirostris | 1 | 1 | 0 |
| Orange-billed Sparrow Arremon aurantiirostris | Chestnut-capped Brushfinch Arremon brunneinucha | 1 | 0 | 1 |
| Chestnut-capped Brushfinch Arremon brunneinucha | Sooty-faced Finch Arremon crassirostris | 1 | 0 | 1 |
| Volcano Junco Junco vulcani | Rufous-collared Sparrow Zonotrichia capensis | 1 | 1 | 0 |
| Volcano Junco Junco vulcani | White-eared Ground-Sparrow Melozone leucotis | 1 | 0 | 1 |
| Volcano Junco Junco vulcani | White-naped Brushfinch Atlapetes albinucha | 1 | 0 | 1 |
| Savannah Sparrow Passerculus sandwichensis | Lincoln's Sparrow Melospiza lincolnii | 1 | 0 | 1 |
| Lincoln's Sparrow Melospiza lincolnii | Cabanis's Ground-Sparrow Melozone cabanisi | 1 | 1 | 0 |
| Large-footed Finch Pezopetes capitalis | Cabanis's Ground-Sparrow Melozone cabanisi | 1 | 1 | 0 |
| Large-footed Finch Pezopetes capitalis | Yellow-thighed Brushfinch Atlapetes tibialis | 1 | 0 | 1 |
| White-eared Ground-Sparrow Melozone leucotis | Rusty Sparrow Aimophila rufescens | 1 | 1 | 0 |
| Yellow-thighed Brushfinch Atlapetes tibialis | Wrenthrush Zeledonia coronata | 1 | 0 | 1 |
| Wrenthrush Zeledonia coronata | Yellow-headed Blackbird Xanthocephalus xanthocephalus | 1 | 1 | 0 |
| Yellow-breasted Chat Icteria virens | Yellow-headed Blackbird Xanthocephalus xanthocephalus | 1 | 0 | 1 |
| Yellow-billed Cacique Amblycercus holosericeus | Shiny Cowbird Molothrus bonariensis | 1 | 1 | 0 |
| Crested Oropendola Psarocolius decumanus | Montezuma Oropendola Psarocolius montezuma | 1 | 1 | 0 |
| Crested Oropendola Psarocolius decumanus | Scarlet-rumped Cacique Cacicus uropygialis | 1 | 1 | 0 |
| Black-cowled Oriole Icterus prosthemelas | Yellow-tailed Oriole Icterus mesomelas | 1 | 1 | 0 |
| Orchard Oriole Icterus spurius | Yellow-tailed Oriole Icterus mesomelas | 1 | 1 | 0 |
| Orchard Oriole Icterus spurius | Spot-breasted Oriole Icterus pectoralis | 1 | 0 | 1 |
| Spot-breasted Oriole Icterus pectoralis | Baltimore Oriole Icterus galbula | 1 | 0 | 1 |
| Spot-breasted Oriole Icterus pectoralis | Red-winged Blackbird Agelaius phoeniceus | 1 | 0 | 1 |
| Spot-breasted Oriole Icterus pectoralis | Speckled Tanager Ixothraupis guttata | 1 | 0 | 1 |
| Baltimore Oriole Icterus galbula | Red-winged Blackbird Agelaius phoeniceus | 1 | 1 | 0 |
| Red-winged Blackbird Agelaius phoeniceus | Shiny Cowbird Molothrus bonariensis | 1 | 1 | 0 |
| Red-winged Blackbird Agelaius phoeniceus | Bronzed Cowbird Molothrus aeneus | 1 | 1 | 0 |
| Shiny Cowbird Molothrus bonariensis | Melodious Blackbird Dives dives | 1 | 1 | 0 |
| Bronzed Cowbird Molothrus aeneus | Nicaraguan Grackle Quiscalus nicaraguensis | 1 | 0 | 1 |
| Melodious Blackbird Dives dives | Great-tailed Grackle Quiscalus mexicanus | 1 | 0 | 1 |
| Melodious Blackbird Dives dives | Blue-black Grassquit Volatinia jacarina | 1 | 1 | 0 |
| Golden-winged Warbler Vermivora chrysoptera | Black-and-white Warbler Mniotilta varia | 1 | 0 | 1 |
| Prothonotary Warbler Protonotaria citrea | Flame-throated Warbler Oreothlypis gutturalis | 1 | 1 | 0 |
| Tennessee Warbler Leiothlypis peregrina | Grey-crowned Yellowthroat Geothlypis poliocephala | 1 | 0 | 1 |
| Nashville Warbler Leiothlypis ruficapilla | Grey-crowned Yellowthroat Geothlypis poliocephala | 1 | 1 | 0 |
| Connecticut Warbler Oporornis agilis | MacGillivray's Warbler Geothlypis tolmiei | 1 | 1 | 0 |
| Grey-crowned Yellowthroat Geothlypis poliocephala | MacGillivray's Warbler Geothlypis tolmiei | 1 | 0 | 1 |
| Grey-crowned Yellowthroat Geothlypis poliocephala | Kentucky Warbler Geothlypis formosa | 1 | 0 | 1 |
| MacGillivray's Warbler Geothlypis tolmiei | Mourning Warbler Geothlypis philadelphia | 1 | 0 | 1 |
| Kentucky Warbler Geothlypis formosa | Tropical Parula Setophaga pitiayumi | 1 | 1 | 0 |
| Northern Parula Setophaga americana | Tropical Parula Setophaga pitiayumi | 1 | 0 | 1 |
| Tropical Parula Setophaga pitiayumi | Magnolia Warbler Setophaga magnolia | 1 | 1 | 0 |
| Tropical Parula Setophaga pitiayumi | Yellow Warbler Setophaga petechia | 1 | 1 | 0 |
| Bay-breasted Warbler Setophaga castanea | Blackburnian Warbler Setophaga fusca | 1 | 1 | 0 |
| Bay-breasted Warbler Setophaga castanea | Yellow Warbler Setophaga petechia | 1 | 1 | 0 |
| Blackburnian Warbler Setophaga fusca | Yellow Warbler Setophaga petechia | 1 | 0 | 1 |
| Blackburnian Warbler Setophaga fusca | Palm Warbler Setophaga palmarum | 1 | 1 | 0 |
| Yellow Warbler Setophaga petechia | Blackpoll Warbler Setophaga striata | 1 | 1 | 0 |
| Chestnut-sided Warbler Setophaga pensylvanica | Palm Warbler Setophaga palmarum | 1 | 0 | 1 |
| Chestnut-sided Warbler Setophaga pensylvanica | Yellow-rumped Warbler Setophaga coronata | 1 | 0 | 1 |
| Chestnut-sided Warbler Setophaga pensylvanica | Black-throated Green Warbler Setophaga virens | 1 | 1 | 0 |
| Black-throated Blue Warbler Setophaga caerulescens | Palm Warbler Setophaga palmarum | 1 | 0 | 1 |
| Palm Warbler Setophaga palmarum | Yellow-rumped Warbler Setophaga coronata | 1 | 0 | 1 |
| Palm Warbler Setophaga palmarum | Townsend's Warbler Setophaga townsendi | 1 | 1 | 0 |
| Yellow-rumped Warbler Setophaga coronata | Yellow-throated Warbler Setophaga dominica | 1 | 1 | 0 |
| Yellow-rumped Warbler Setophaga coronata | Chestnut-capped Warbler Basileuterus delattrii | 1 | 0 | 1 |
| Yellow-throated Warbler Setophaga dominica | Black-throated Green Warbler Setophaga virens | 1 | 1 | 0 |
| Townsend's Warbler Setophaga townsendi | Black-cheeked Warbler Basileuterus melanogenys | 1 | 1 | 0 |
| Black-throated Green Warbler Setophaga virens | Golden-crowned Warbler Basileuterus culicivorus | 1 | 1 | 0 |
| Chestnut-capped Warbler Basileuterus delattrii | Black-cheeked Warbler Basileuterus melanogenys | 1 | 0 | 1 |
| Chestnut-capped Warbler Basileuterus delattrii | Costa Rican Warbler Basileuterus melanotis | 1 | 1 | 0 |
| Black-cheeked Warbler Basileuterus melanogenys | Costa Rican Warbler Basileuterus melanotis | 1 | 0 | 1 |
| Golden-crowned Warbler Basileuterus culicivorus | Canada Warbler Cardellina canadensis | 1 | 1 | 0 |
| Costa Rican Warbler Basileuterus melanotis | Buff-rumped Warbler Myiothlypis fulvicauda | 1 | 1 | 0 |
| Hepatic Tanager Piranga flava | Scarlet Tanager Piranga olivacea | 1 | 0 | 1 |
| Hepatic Tanager Piranga flava | Western Tanager Piranga ludoviciana | 1 | 1 | 0 |
| Hepatic Tanager Piranga flava | Flame-coloured Tanager Piranga bidentata | 1 | 1 | 0 |
| Scarlet Tanager Piranga olivacea | Western Tanager Piranga ludoviciana | 1 | 1 | 0 |
| Scarlet Tanager Piranga olivacea | Flame-coloured Tanager Piranga bidentata | 1 | 1 | 0 |
| Western Tanager Piranga ludoviciana | Red-crowned Ant-Tanager Habia rubica | 1 | 1 | 0 |
| White-winged Tanager Piranga leucoptera | Red-crowned Ant-Tanager Habia rubica | 1 | 1 | 0 |
| Red-crowned Ant-Tanager Habia rubica | Black-cheeked Ant-Tanager Driophlox atrimaxillaris | 1 | 1 | 0 |
| Red-throated Ant-Tanager Driophlox fuscicauda | Black-cheeked Ant-Tanager Driophlox atrimaxillaris | 1 | 0 | 1 |
| Red-throated Ant-Tanager Driophlox fuscicauda | Carmiol's Tanager Chlorothraupis carmioli | 1 | 1 | 0 |
| Black-cheeked Ant-Tanager Driophlox atrimaxillaris | Carmiol's Tanager Chlorothraupis carmioli | 1 | 0 | 1 |
| Black-cheeked Ant-Tanager Driophlox atrimaxillaris | Black-thighed Grosbeak Pheucticus tibialis | 1 | 1 | 0 |
| Carmiol's Tanager Chlorothraupis carmioli | Black-thighed Grosbeak Pheucticus tibialis | 1 | 1 | 0 |
| Rose-breasted Grosbeak Pheucticus ludovicianus | Blue Grosbeak Passerina caerulea | 1 | 1 | 0 |
| Blue-black Grosbeak Cyanoloxia cyanoides | Blue Grosbeak Passerina caerulea | 1 | 0 | 1 |
| Blue-black Grosbeak Cyanoloxia cyanoides | Indigo Bunting Passerina cyanea | 1 | 1 | 0 |
| Blue-black Grosbeak Cyanoloxia cyanoides | Painted Bunting Passerina ciris | 1 | 1 | 0 |
| Blue Grosbeak Passerina caerulea | Dickcissel Spiza americana | 1 | 1 | 0 |
| Painted Bunting Passerina ciris | Dickcissel Spiza americana | 1 | 1 | 0 |
| White-shouldered Tanager Loriotus luctuosus | Scarlet-rumped Tanager Ramphocelus passerinii | 1 | 1 | 0 |
| White-lined Tanager Tachyphonus rufus | Scarlet-rumped Tanager Ramphocelus passerinii | 1 | 1 | 0 |
| Blue-and-gold Tanager Bangsia arcaei | Yellow-winged Tanager Thraupis abbas | 1 | 1 | 0 |
| Blue-and-gold Tanager Bangsia arcaei | Palm Tanager Thraupis palmarum | 1 | 1 | 0 |
| Spangle-cheeked Tanager Tangara dowii | Plain-coloured Tanager Tangara inornata | 1 | 1 | 0 |
| Plain-coloured Tanager Tangara inornata | Emerald Tanager Tangara florida | 1 | 1 | 0 |
| Rufous-winged Tanager Tangara lavinia | Emerald Tanager Tangara florida | 1 | 1 | 0 |
| Emerald Tanager Tangara florida | Scarlet-thighed Dacnis Dacnis venusta | 1 | 0 | 1 |
| Scarlet-thighed Dacnis Dacnis venusta | Blue Dacnis Dacnis cayana | 1 | 1 | 0 |
| Blue Dacnis Dacnis cayana | Red-legged Honeycreeper Cyanerpes cyaneus | 1 | 1 | 0 |
| Blue Dacnis Dacnis cayana | Green Honeycreeper Chlorophanes spiza | 1 | 1 | 0 |
| Shining Honeycreeper Cyanerpes lucidus | Red-legged Honeycreeper Cyanerpes cyaneus | 1 | 1 | 0 |
| Red-legged Honeycreeper Cyanerpes cyaneus | Black-and-yellow Tanager Chrysothlypis chrysomelas | 1 | 1 | 0 |
| Black-and-yellow Tanager Chrysothlypis chrysomelas | Blue-black Grassquit Volatinia jacarina | 1 | 1 | 0 |
| Slaty Flowerpiercer Diglossa plumbea | Wedge-tailed Grass-Finch Emberizoides herbicola | 1 | 1 | 0 |
| Slaty Finch Haplospiza rustica | Peg-billed Finch Acanthidops bairdi | 1 | 1 | 0 |
| Slaty Finch Haplospiza rustica | Wedge-tailed Grass-Finch Emberizoides herbicola | 1 | 0 | 1 |
| Slaty Finch Haplospiza rustica | Blue-black Grassquit Volatinia jacarina | 1 | 0 | 1 |
| Wedge-tailed Grass-Finch Emberizoides herbicola | Thick-billed Seed-Finch Sporophila funerea | 1 | 1 | 0 |
| Lesson's Seedeater Sporophila bouvronides | Lined Seedeater Sporophila lineola | 1 | 0 | 1 |
| Thick-billed Seed-Finch Sporophila funerea | Variable Seedeater Sporophila corvina | 1 | 0 | 1 |
| Nicaraguan Seed-Finch Sporophila nuttingi | Variable Seedeater Sporophila corvina | 1 | 1 | 0 |
| Nicaraguan Seed-Finch Sporophila nuttingi | Morelet's Seedeater Sporophila morelleti | 1 | 0 | 1 |
| Variable Seedeater Sporophila corvina | Yellow-bellied Seedeater Sporophila nigricollis | 1 | 0 | 1 |
| Morelet's Seedeater Sporophila morelleti | Bananaquit Coereba flaveola | 1 | 0 | 1 |
| Morelet's Seedeater Sporophila morelleti | Buff-throated Saltator Saltator maximus | 1 | 1 | 0 |
| Yellow-bellied Seedeater Sporophila nigricollis | Slate-coloured Seedeater Sporophila schistacea | 1 | 1 | 0 |
| Yellow-bellied Seedeater Sporophila nigricollis | Bananaquit Coereba flaveola | 1 | 0 | 1 |
| Yellow-bellied Seedeater Sporophila nigricollis | Yellow-faced Grassquit Tiaris olivaceus | 1 | 0 | 1 |
| Yellow-bellied Seedeater Sporophila nigricollis | Cocos Finch Pinaroloxias inornata | 1 | 1 | 0 |
| Bananaquit Coereba flaveola | Cocos Finch Pinaroloxias inornata | 1 | 0 | 1 |
| Yellow-faced Grassquit Tiaris olivaceus | Buff-throated Saltator Saltator maximus | 1 | 1 | 0 |
| Yellow-faced Grassquit Tiaris olivaceus | Black-headed Saltator Saltator atriceps | 1 | 0 | 1 |
| Black-headed Saltator Saltator atriceps | Streaked Saltator Saltator striatipectus | 1 | 1 | 0 |
| Grey-throated Leaftosser Sclerurus albigularis | Olivaceous Woodcreeper Sittasomus griseicapillus | 1 | 1 | 0 |
| Great Tinamou Tinamus major | Thicket Tinamou Crypturellus cinnamomeus | 1 | 0 | 1 |
| Thicket Tinamou Crypturellus cinnamomeus | Fulvous Whistling-Duck Dendrocygna bicolor | 1 | 1 | 0 |
| Fulvous Whistling-Duck Dendrocygna bicolor | Blue-winged Teal Spatula discors | 1 | 0 | 1 |
| Orinoco Goose Oressochen jubatus | Cinnamon Teal Spatula cyanoptera | 1 | 1 | 0 |
| Blue-winged Teal Spatula discors | Blue-grey Tanager Thraupis episcopus | 1 | 1 | 0 |
| Canvasback Aythya valisineria | Redhead Aythya americana | 1 | 1 | 0 |
| Hooded Merganser Lophodytes cucullatus | Red-breasted Merganser Mergus serrator | 1 | 0 | 1 |
| Grey-headed Chachalaca Ortalis cinereiceps | Black Guan Chamaepetes unicolor | 1 | 0 | 1 |
| Crested Guan Penelope purpurascens | Black Guan Chamaepetes unicolor | 1 | 1 | 0 |
| Crested Guan Penelope purpurascens | Streak-headed Woodcreeper Lepidocolaptes souleyetii | 1 | 1 | 0 |
| Crested Bobwhite Colinus cristatus | Black-breasted Wood-Quail Odontophorus leucolaemus | 1 | 0 | 1 |
| Marbled Wood-Quail Odontophorus gujanensis | Black-breasted Wood-Quail Odontophorus leucolaemus | 1 | 1 | 0 |
| Black-breasted Wood-Quail Odontophorus leucolaemus | Cocos Finch Pinaroloxias inornata | 1 | 1 | 0 |
| Pale-vented Pigeon Patagioenas cayennensis | Red-billed Pigeon Patagioenas flavirostris | 1 | 1 | 0 |
| Pale-vented Pigeon Patagioenas cayennensis | Band-tailed Pigeon Patagioenas fasciata | 1 | 1 | 0 |
| Pale-vented Pigeon Patagioenas cayennensis | Ruddy Pigeon Patagioenas subvinacea | 1 | 1 | 0 |
| Scaled Pigeon Patagioenas speciosa | Red-billed Pigeon Patagioenas flavirostris | 1 | 1 | 0 |
| Inca Dove Columbina inca | Plain-breasted Ground Dove Columbina minuta | 1 | 0 | 1 |
| Inca Dove Columbina inca | Ruddy Ground Dove Columbina talpacoti | 1 | 1 | 0 |
| Common Ground Dove Columbina passerina | Velvety Manakin Lepidothrix velutina | 1 | 0 | 1 |
| Plain-breasted Ground Dove Columbina minuta | Blue Ground Dove Claravis pretiosa | 1 | 1 | 0 |
| Ruddy Ground Dove Columbina talpacoti | Blue Ground Dove Claravis pretiosa | 1 | 0 | 1 |
| Ruddy Ground Dove Columbina talpacoti | Maroon-chested Ground Dove Paraclaravis mondetoura | 1 | 1 | 0 |
| Ruddy Ground Dove Columbina talpacoti | Ruddy Quail-Dove Geotrygon montana | 1 | 1 | 0 |
| Blue Ground Dove Claravis pretiosa | Ruddy Quail-Dove Geotrygon montana | 1 | 1 | 0 |
| Maroon-chested Ground Dove Paraclaravis mondetoura | White-tipped Dove Leptotila verreauxi | 1 | 1 | 0 |
| Maroon-chested Ground Dove Paraclaravis mondetoura | Mourning Dove Zenaida macroura | 1 | 0 | 1 |
| Ruddy Quail-Dove Geotrygon montana | Olive-backed Quail-Dove Leptotrygon veraguensis | 1 | 1 | 0 |
| Ruddy Quail-Dove Geotrygon montana | White-tipped Dove Leptotila verreauxi | 1 | 0 | 1 |
| Ruddy Quail-Dove Geotrygon montana | White-winged Dove Zenaida asiatica | 1 | 1 | 0 |
| Ruddy Quail-Dove Geotrygon montana | Mourning Dove Zenaida macroura | 1 | 0 | 1 |
| Ruddy Quail-Dove Geotrygon montana | Rufous-vented Ground-Cuckoo Neomorphus geoffroyi | 1 | 1 | 0 |
| Violaceous Quail-Dove Geotrygon violacea | White-tipped Dove Leptotila verreauxi | 1 | 0 | 1 |
| Violaceous Quail-Dove Geotrygon violacea | Mourning Dove Zenaida macroura | 1 | 1 | 0 |
| Olive-backed Quail-Dove Leptotrygon veraguensis | Grey-chested Dove Leptotila cassinii | 1 | 0 | 1 |
| Olive-backed Quail-Dove Leptotrygon veraguensis | Grey-headed Dove Leptotila plumbeiceps | 1 | 1 | 0 |
| White-tipped Dove Leptotila verreauxi | Grey-chested Dove Leptotila cassinii | 1 | 1 | 0 |
| White-tipped Dove Leptotila verreauxi | Grey-headed Dove Leptotila plumbeiceps | 1 | 0 | 1 |
| White-tipped Dove Leptotila verreauxi | White-winged Dove Zenaida asiatica | 1 | 0 | 1 |
| White-tipped Dove Leptotila verreauxi | Common Pauraque Nyctidromus albicollis | 1 | 1 | 0 |
| Groove-billed Ani Crotophaga sulcirostris | Striped Cuckoo Tapera naevia | 1 | 1 | 0 |
| Groove-billed Ani Crotophaga sulcirostris | Great Kiskadee Pitangus sulphuratus | 1 | 0 | 1 |
| Groove-billed Ani Crotophaga sulcirostris | Black-headed Saltator Saltator atriceps | 1 | 1 | 0 |
| Striped Cuckoo Tapera naevia | Rufous-vented Ground-Cuckoo Neomorphus geoffroyi | 1 | 1 | 0 |
| Lesser Ground-Cuckoo Morococcyx erythropygus | Common Squirrel-Cuckoo Piaya cayana | 1 | 1 | 0 |
| Lesser Ground-Cuckoo Morococcyx erythropygus | Cocos Cuckoo Coccyzus ferrugineus | 1 | 0 | 1 |
| Rufous-vented Ground-Cuckoo Neomorphus geoffroyi | Cocos Cuckoo Coccyzus ferrugineus | 1 | 0 | 1 |
| Rufous-vented Ground-Cuckoo Neomorphus geoffroyi | Rose-throated Becard Pachyramphus aglaiae | 1 | 0 | 1 |
| Rufous-vented Ground-Cuckoo Neomorphus geoffroyi | Grey-headed Tanager Eucometis penicillata | 1 | 1 | 0 |
| Common Squirrel-Cuckoo Piaya cayana | Common Pauraque Nyctidromus albicollis | 1 | 1 | 0 |
| Mangrove Cuckoo Coccyzus minor | Cocos Cuckoo Coccyzus ferrugineus | 1 | 0 | 1 |
| Cocos Cuckoo Coccyzus ferrugineus | Western Tanager Piranga ludoviciana | 1 | 0 | 1 |
| Lesser Nighthawk Chordeiles acutipennis | Common Nighthawk Chordeiles minor | 1 | 1 | 0 |
| Common Nighthawk Chordeiles minor | Common Pauraque Nyctidromus albicollis | 1 | 1 | 0 |
| Short-tailed Nighthawk Lurocalis semitorquatus | Common Potoo Nyctibius griseus | 1 | 0 | 1 |
| Common Pauraque Nyctidromus albicollis | White-tailed Nightjar Hydropsalis cayennensis | 1 | 0 | 1 |
| Common Pauraque Nyctidromus albicollis | Rufous Nightjar Antrostomus rufus | 1 | 1 | 0 |
| Common Pauraque Nyctidromus albicollis | Common Potoo Nyctibius griseus | 1 | 0 | 1 |
| White-tailed Nightjar Hydropsalis cayennensis | Chuck-will's-widow Antrostomus carolinensis | 1 | 1 | 0 |
| Chuck-will's-widow Antrostomus carolinensis | Dusky Nightjar Antrostomus saturatus | 1 | 0 | 1 |
| Rufous Nightjar Antrostomus rufus | Eastern Whip-poor-will Antrostomus vociferus | 1 | 1 | 0 |
| Rufous Nightjar Antrostomus rufus | Dusky Nightjar Antrostomus saturatus | 1 | 0 | 1 |
| Dusky Nightjar Antrostomus saturatus | Northern Potoo Nyctibius jamaicensis | 1 | 1 | 0 |
| Black Swift Cypseloides niger | White-chinned Swift Cypseloides cryptus | 1 | 0 | 1 |
| Black Swift Cypseloides niger | White-collared Swift Streptoprocne zonaris | 1 | 1 | 0 |
| Black Swift Cypseloides niger | Grey-rumped Swift Chaetura cinereiventris | 1 | 1 | 0 |
| Black Swift Cypseloides niger | Costa Rican Swift Chaetura fumosa | 1 | 1 | 0 |
| Chestnut-collared Swift Streptoprocne rutila | Grey-rumped Swift Chaetura cinereiventris | 1 | 1 | 0 |
| Chestnut-collared Swift Streptoprocne rutila | Costa Rican Swift Chaetura fumosa | 1 | 1 | 0 |
| White-collared Swift Streptoprocne zonaris | Grey-rumped Swift Chaetura cinereiventris | 1 | 0 | 1 |
| White-collared Swift Streptoprocne zonaris | Chimney Swift Chaetura pelagica | 1 | 0 | 1 |
| White-collared Swift Streptoprocne zonaris | Barn Swallow Hirundo rustica | 1 | 0 | 1 |
| Grey-rumped Swift Chaetura cinereiventris | Vaux's Swift Chaetura vauxi | 1 | 1 | 0 |
| Grey-rumped Swift Chaetura cinereiventris | Cliff Swallow Petrochelidon pyrrhonota | 1 | 0 | 1 |
| Costa Rican Swift Chaetura fumosa | Vaux's Swift Chaetura vauxi | 1 | 0 | 1 |
| Chimney Swift Chaetura pelagica | Lesser Swallow-tailed Swift Panyptila cayennensis | 1 | 0 | 1 |
| Lesser Swallow-tailed Swift Panyptila cayennensis | Great Swallow-tailed Swift Panyptila sanctihieronymi | 1 | 0 | 1 |
| White-necked Jacobin Florisuga mellivora | Band-tailed Barbthroat Threnetes ruckeri | 1 | 1 | 0 |
| White-necked Jacobin Florisuga mellivora | Green Hermit Phaethornis guy | 1 | 1 | 0 |
| White-tipped Sicklebill Eutoxeres aquila | Bronzy Hermit Glaucis aeneus | 1 | 0 | 1 |
| Bronzy Hermit Glaucis aeneus | Green Hermit Phaethornis guy | 1 | 0 | 1 |
| Bronzy Hermit Glaucis aeneus | Northern Bentbill Oncostoma cinereigulare | 1 | 0 | 1 |
| Band-tailed Barbthroat Threnetes ruckeri | Stripe-throated Hermit Phaethornis striigularis | 1 | 1 | 0 |
| Band-tailed Barbthroat Threnetes ruckeri | Olive-backed Euphonia Euphonia gouldi | 1 | 1 | 0 |
| Green Hermit Phaethornis guy | Long-billed Hermit Phaethornis longirostris | 1 | 1 | 0 |
| Long-billed Hermit Phaethornis longirostris | Stripe-throated Hermit Phaethornis striigularis | 1 | 1 | 0 |
| Long-billed Hermit Phaethornis longirostris | Green-fronted Lancebill Doryfera ludovicae | 1 | 0 | 1 |
| Long-billed Hermit Phaethornis longirostris | White-lored Gnatcatcher Polioptila albiloris | 1 | 1 | 0 |
| Long-billed Hermit Phaethornis longirostris | Common Chlorospingus Chlorospingus flavopectus | 1 | 1 | 0 |
| Purple-crowned Fairy Heliothryx barroti | Veraguan Mango Anthracothorax veraguensis | 1 | 1 | 0 |
| Purple-crowned Fairy Heliothryx barroti | Green Thorntail Discosura conversii | 1 | 1 | 0 |
| Green-breasted Mango Anthracothorax prevostii | Veraguan Mango Anthracothorax veraguensis | 1 | 1 | 0 |
| Green-breasted Mango Anthracothorax prevostii | Green Thorntail Discosura conversii | 1 | 1 | 0 |
| Green-breasted Mango Anthracothorax prevostii | White-crested Coquette Lophornis adorabilis | 1 | 1 | 0 |
| Talamanca Hummingbird Eugenes spectabilis | Long-billed Starthroat Heliomaster longirostris | 1 | 1 | 0 |
| Talamanca Hummingbird Eugenes spectabilis | Plain-capped Starthroat Heliomaster constantii | 1 | 1 | 0 |
| Long-billed Starthroat Heliomaster longirostris | Purple-throated Mountain-gem Lampornis calolaemus | 1 | 1 | 0 |
| Plain-capped Starthroat Heliomaster constantii | Fiery-throated Hummingbird Panterpe insignis | 1 | 0 | 1 |
| Plain-capped Starthroat Heliomaster constantii | Ruby-throated Hummingbird Archilochus colubris | 1 | 0 | 1 |
| Plain-capped Starthroat Heliomaster constantii | Black-striped Woodcreeper Xiphorhynchus lachrymosus | 1 | 0 | 1 |
| Fiery-throated Hummingbird Panterpe insignis | Ruby-throated Hummingbird Archilochus colubris | 1 | 1 | 0 |
| White-bellied Mountain-gem Lampornis hemileucus | Streak-backed Oriole Icterus pustulatus | 1 | 0 | 1 |
| Purple-throated Mountain-gem Lampornis calolaemus | White-throated Mountain-gem Lampornis castaneoventris | 1 | 1 | 0 |
| Purple-throated Mountain-gem Lampornis calolaemus | Magenta-throated Woodstar Philodice bryantae | 1 | 1 | 0 |
| Purple-throated Mountain-gem Lampornis calolaemus | Volcano Hummingbird Selasphorus flammula | 1 | 1 | 0 |
| White-throated Mountain-gem Lampornis castaneoventris | Magenta-throated Woodstar Philodice bryantae | 1 | 0 | 1 |
| White-throated Mountain-gem Lampornis castaneoventris | Ruby-throated Hummingbird Archilochus colubris | 1 | 0 | 1 |
| Magenta-throated Woodstar Philodice bryantae | Volcano Hummingbird Selasphorus flammula | 1 | 0 | 1 |
| Ruby-throated Hummingbird Archilochus colubris | Volcano Hummingbird Selasphorus flammula | 1 | 0 | 1 |
| Volcano Hummingbird Selasphorus flammula | Canivet's Emerald Cynanthus canivetii | 1 | 0 | 1 |
| Volcano Hummingbird Selasphorus flammula | Violet-headed Hummingbird Klais guimeti | 1 | 1 | 0 |
| Scintillant Hummingbird Selasphorus scintilla | Violet-headed Hummingbird Klais guimeti | 1 | 1 | 0 |
| Canivet's Emerald Cynanthus canivetii | Violet Sabrewing Campylopterus hemileucurus | 1 | 1 | 0 |
| Violet-headed Hummingbird Klais guimeti | Violet Sabrewing Campylopterus hemileucurus | 1 | 1 | 0 |
| Violet-headed Hummingbird Klais guimeti | Crowned Woodnymph Thalurania colombica | 1 | 1 | 0 |
| Violet-headed Hummingbird Klais guimeti | Olivaceous Woodcreeper Sittasomus griseicapillus | 1 | 1 | 0 |
| Bronze-tailed Plumeleteer Chalybura urochrysia | Snowcap Microchera albocoronata | 1 | 0 | 1 |
| Bronze-tailed Plumeleteer Chalybura urochrysia | Blue-tailed Hummingbird Saucerottia cyanura | 1 | 1 | 0 |
| Crowned Woodnymph Thalurania colombica | Stripe-tailed Hummingbird Eupherusa eximia | 1 | 1 | 0 |
| Crowned Woodnymph Thalurania colombica | Southern Beardless-Tyrannulet Camptostoma obsoletum | 1 | 0 | 1 |
| Snowcap Microchera albocoronata | White-tailed Emerald Microchera chionura | 1 | 0 | 1 |
| White-tailed Emerald Microchera chionura | Stripe-tailed Hummingbird Eupherusa eximia | 1 | 1 | 0 |
| White-tailed Emerald Microchera chionura | Blue-vented Hummingbird Saucerottia hoffmanni | 1 | 1 | 0 |
| Stripe-tailed Hummingbird Eupherusa eximia | Black-bellied Hummingbird Eupherusa nigriventris | 1 | 1 | 0 |
| Stripe-tailed Hummingbird Eupherusa eximia | Scaly-breasted Hummingbird Phaeochroa cuvierii | 1 | 1 | 0 |
| Black-bellied Hummingbird Eupherusa nigriventris | Blue-vented Hummingbird Saucerottia hoffmanni | 1 | 0 | 1 |
| Blue-vented Hummingbird Saucerottia hoffmanni | Cinnamon Hummingbird Amazilia rutila | 1 | 1 | 0 |
| Blue-tailed Hummingbird Saucerottia cyanura | Snowy-bellied Hummingbird Saucerottia edward | 1 | 1 | 0 |
| Snowy-bellied Hummingbird Saucerottia edward | Rufous-tailed Hummingbird Amazilia tzacatl | 1 | 0 | 1 |
| Snowy-bellied Hummingbird Saucerottia edward | Blue-chested Hummingbird Polyerata amabilis | 1 | 0 | 1 |
| Cinnamon Hummingbird Amazilia rutila | Rufous-tailed Hummingbird Amazilia tzacatl | 1 | 1 | 0 |
| Rufous-tailed Hummingbird Amazilia tzacatl | Blue-chested Hummingbird Polyerata amabilis | 1 | 0 | 1 |
| Rufous-tailed Hummingbird Amazilia tzacatl | Charming Hummingbird Polyerata decora | 1 | 1 | 0 |
| Rufous-tailed Hummingbird Amazilia tzacatl | Blue-throated Goldentail Chlorestes eliciae | 1 | 1 | 0 |
| Rufous-tailed Hummingbird Amazilia tzacatl | Morelet's Seedeater Sporophila morelleti | 1 | 1 | 0 |
| Mangrove Hummingbird Chrysuronia boucardi | Blue-chested Hummingbird Polyerata amabilis | 1 | 1 | 0 |
| Sapphire-throated Hummingbird Chrysuronia coeruleogularis | Blue-chested Hummingbird Polyerata amabilis | 1 | 1 | 0 |
| Sapphire-throated Hummingbird Chrysuronia coeruleogularis | Charming Hummingbird Polyerata decora | 1 | 0 | 1 |
| Mangrove Rail Rallus longirostris | Colombian Crake Mustelirallus colombianus | 1 | 1 | 0 |
| Rufous-necked Wood-Rail Aramides axillaris | Grey-cowled Wood-Rail Aramides cajaneus | 1 | 0 | 1 |
| Grey-cowled Wood-Rail Aramides cajaneus | Pale-breasted Spinetail Synallaxis albescens | 1 | 0 | 1 |
| American Moorhen Gallinula galeata | Purple Gallinule Porphyrio martinica | 1 | 0 | 1 |
| Purple Gallinule Porphyrio martinica | Yellow-breasted Crake Laterallus flaviventer | 1 | 1 | 0 |
| Purple Gallinule Porphyrio martinica | Limpkin Aramus guarauna | 1 | 0 | 1 |
| White-throated Crake Laterallus albigularis | Sungrebe Heliornis fulica | 1 | 0 | 1 |
| Double-striped Thick-knee Hesperoburhinus bistriatus | Black-necked Stilt Himantopus mexicanus | 1 | 0 | 1 |
| Black-necked Stilt Himantopus mexicanus | Killdeer Charadrius vociferus | 1 | 1 | 0 |
| American Oystercatcher Haematopus palliatus | American Golden Plover Pluvialis dominica | 1 | 1 | 0 |
| Grey Plover Pluvialis squatarola | Wilson's Plover Anarhynchus wilsonia | 1 | 1 | 0 |
| American Golden Plover Pluvialis dominica | Pacific Golden Plover Pluvialis fulva | 1 | 1 | 0 |
| Killdeer Charadrius vociferus | Semipalmated Plover Charadrius semipalmatus | 1 | 1 | 0 |
| Semipalmated Plover Charadrius semipalmatus | Wilson's Plover Anarhynchus wilsonia | 1 | 0 | 1 |
| Wilson's Plover Anarhynchus wilsonia | Collared Plover Anarhynchus collaris | 1 | 1 | 0 |
| Northern Jacana Jacana spinosa | Wattled Jacana Jacana jacana | 1 | 1 | 0 |
| Long-billed Curlew Numenius americanus | Marbled Godwit Limosa fedoa | 1 | 1 | 0 |
| Marbled Godwit Limosa fedoa | Red-necked Phalarope Phalaropus lobatus | 1 | 1 | 0 |
| Short-billed Dowitcher Limnodromus griseus | Red-necked Phalarope Phalaropus lobatus | 1 | 0 | 1 |
| Short-billed Dowitcher Limnodromus griseus | Solitary Sandpiper Tringa solitaria | 1 | 1 | 0 |
| Short-billed Dowitcher Limnodromus griseus | Buff-rumped Warbler Myiothlypis fulvicauda | 1 | 0 | 1 |
| Wilson's Phalarope Phalaropus tricolor | Grey Phalarope Phalaropus fulicarius | 1 | 0 | 1 |
| Spotted Sandpiper Actitis macularius | Lesser Yellowlegs Tringa flavipes | 1 | 0 | 1 |
| Spotted Sandpiper Actitis macularius | Leach's Storm-Petrel Hydrobates leucorhous | 1 | 0 | 1 |
| Lesser Yellowlegs Tringa flavipes | Willet Tringa semipalmata | 1 | 1 | 0 |
| Greater Yellowlegs Tringa melanoleuca | Ruddy Turnstone Arenaria interpres | 1 | 0 | 1 |
| Stilt Sandpiper Calidris himantopus | Baird's Sandpiper Calidris bairdii | 1 | 1 | 0 |
| Dunlin Calidris alpina | Baird's Sandpiper Calidris bairdii | 1 | 0 | 1 |
| Least Sandpiper Calidris minutilla | Semipalmated Sandpiper Calidris pusilla | 1 | 0 | 1 |
| Pectoral Sandpiper Calidris melanotos | Semipalmated Sandpiper Calidris pusilla | 1 | 0 | 1 |
| Long-tailed Skua Stercorarius longicaudus | Pomarine Skua Stercorarius pomarinus | 1 | 1 | 0 |
| Black-legged Kittiwake Rissa tridactyla | Sabine's Gull Xema sabini | 1 | 0 | 1 |
| Bonaparte's Gull Chroicocephalus philadelphia | Franklin's Gull Leucophaeus pipixcan | 1 | 1 | 0 |
| Franklin's Gull Leucophaeus pipixcan | Ring-billed Gull Larus delawarensis | 1 | 1 | 0 |
| Heermann's Gull Larus heermanni | Ring-billed Gull Larus delawarensis | 1 | 0 | 1 |
| Western Gull Larus occidentalis | Kelp Gull Larus dominicanus | 1 | 1 | 0 |
| Kelp Gull Larus dominicanus | Herring Gull Larus argentatus | 1 | 0 | 1 |
| Kelp Gull Larus dominicanus | Great Black-backed Gull Larus marinus | 1 | 1 | 0 |
| Black Skimmer Rynchops niger | Brown Noddy Anous stolidus | 1 | 0 | 1 |
| White Tern Gygis alba | Black Noddy Anous minutus | 1 | 1 | 0 |
| Black Noddy Anous minutus | Bridled Tern Onychoprion anaethetus | 1 | 1 | 0 |
| Black Noddy Anous minutus | Gull-billed Tern Gelochelidon nilotica | 1 | 0 | 1 |
| Black Noddy Anous minutus | Black Tern Chlidonias niger | 1 | 1 | 0 |
| Bridled Tern Onychoprion anaethetus | Least Tern Sternula antillarum | 1 | 0 | 1 |
| Gull-billed Tern Gelochelidon nilotica | Royal Tern Thalasseus maximus | 1 | 0 | 1 |
| Black Tern Chlidonias niger | Common Tern Sterna hirundo | 1 | 0 | 1 |
| Forster's Tern Sterna forsteri | Common Tern Sterna hirundo | 1 | 1 | 0 |
| Arctic Tern Sterna paradisaea | Roseate Tern Sterna dougallii | 1 | 0 | 1 |
| Sandwich Tern Thalasseus sandvicensis | Elegant Tern Thalasseus elegans | 1 | 0 | 1 |
| Sunbittern Eurypyga helias | Scrub Greenlet Hylophilus flavipes | 1 | 1 | 0 |
| White-tailed Tropicbird Phaethon lepturus | Salvin's Albatross Thalassarche salvini | 1 | 1 | 0 |
| Waved Albatross Phoebastria irrorata | Salvin's Albatross Thalassarche salvini | 1 | 0 | 1 |
| Black Storm-Petrel Hydrobates melania | Least Storm-Petrel Hydrobates microsoma | 1 | 0 | 1 |
| Great Shearwater Ardenna gravis | Wedge-tailed Shearwater Ardenna pacifica | 1 | 1 | 0 |
| Great Shearwater Ardenna gravis | Christmas Shearwater Puffinus nativitatis | 1 | 1 | 0 |
| Wedge-tailed Shearwater Ardenna pacifica | Sooty Shearwater Ardenna grisea | 1 | 1 | 0 |
| Sooty Shearwater Ardenna grisea | Galapagos Shearwater Puffinus subalaris | 1 | 0 | 1 |
| Galapagos Shearwater Puffinus subalaris | Sargasso Shearwater Puffinus lherminieri | 1 | 1 | 0 |
| Black-vented Shearwater Puffinus opisthomelas | Sargasso Shearwater Puffinus lherminieri | 1 | 1 | 0 |
| Jabiru Jabiru mycteria | Wood Stork Mycteria americana | 1 | 0 | 1 |
| Magnificent Frigatebird Fregata magnificens | Brown Booby Sula leucogaster | 1 | 1 | 0 |
| Great Frigatebird Fregata minor | Brown Booby Sula leucogaster | 1 | 0 | 1 |
| Red-footed Booby Sula sula | Masked Booby Sula dactylatra | 1 | 1 | 0 |
| Brown Booby Sula leucogaster | Masked Booby Sula dactylatra | 1 | 0 | 1 |
| Brown Booby Sula leucogaster | Nazca Booby Sula granti | 1 | 0 | 1 |
| Nazca Booby Sula granti | Blue-footed Booby Sula nebouxii | 1 | 1 | 0 |
| Nazca Booby Sula granti | Peruvian Booby Sula variegata | 1 | 0 | 1 |
| American White Pelican Pelecanus erythrorhynchos | Brown Pelican Pelecanus occidentalis | 1 | 0 | 1 |
| Brown Pelican Pelecanus occidentalis | Little Blue Heron Egretta caerulea | 1 | 1 | 0 |
| Rufescent Tiger-Heron Tigrisoma lineatum | Fasciated Tiger-Heron Tigrisoma fasciatum | 1 | 0 | 1 |
| Bare-throated Tiger-Heron Tigrisoma mexicanum | Fasciated Tiger-Heron Tigrisoma fasciatum | 1 | 1 | 0 |
| Bare-throated Tiger-Heron Tigrisoma mexicanum | Black-crowned Night Heron Nycticorax nycticorax | 1 | 1 | 0 |
| Boat-billed Heron Cochlearius cochlearius | Pinnated Bittern Botaurus pinnatus | 1 | 0 | 1 |
| Black-crowned Night Heron Nycticorax nycticorax | Little Blue Heron Egretta caerulea | 1 | 1 | 0 |
| Little Blue Heron Egretta caerulea | Reddish Egret Egretta rufescens | 1 | 1 | 0 |
| Tricoloured Heron Egretta tricolor | Reddish Egret Egretta rufescens | 1 | 0 | 1 |
| Snowy Egret Egretta thula | Great White Egret Ardea alba | 1 | 0 | 1 |
| Striated Heron Butorides striata | Great Blue Heron Ardea herodias | 1 | 0 | 1 |
| Green Heron Butorides virescens | Great Blue Heron Ardea herodias | 1 | 0 | 1 |
| Western Cattle-Egret Ardea ibis | Great White Egret Ardea alba | 1 | 0 | 1 |
| Western Cattle-Egret Ardea ibis | Great Blue Heron Ardea herodias | 1 | 0 | 1 |
| Great White Egret Ardea alba | Roseate Spoonbill Platalea ajaja | 1 | 0 | 1 |
| White Ibis Eudocimus albus | Bare-faced Ibis Phimosus infuscatus | 1 | 0 | 1 |
| Glossy Ibis Plegadis falcinellus | Green Ibis Mesembrinibis cayennensis | 1 | 1 | 0 |
| American Black Vulture Coragyps atratus | Black-throated Green Warbler Setophaga virens | 1 | 1 | 0 |
| Turkey Vulture Cathartes aura | Lesser Yellow-headed Vulture Cathartes burrovianus | 1 | 0 | 1 |
| Turkey Vulture Cathartes aura | Swainson's Hawk Buteo swainsoni | 1 | 1 | 0 |
| Turkey Vulture Cathartes aura | Laughing Falcon Herpetotheres cachinnans | 1 | 1 | 0 |
| White-tailed Kite Elanus leucurus | Harpy Eagle Harpia harpyja | 1 | 1 | 0 |
| Hook-billed Kite Chondrohierax uncinatus | Grey-headed Kite Leptodon cayanensis | 1 | 0 | 1 |
| Swallow-tailed Kite Elanoides forficatus | Crested Eagle Morphnus guianensis | 1 | 0 | 1 |
| Crested Eagle Morphnus guianensis | Black Hawk-Eagle Spizaetus tyrannus | 1 | 0 | 1 |
| Crested Eagle Morphnus guianensis | Ornate Hawk-Eagle Spizaetus ornatus | 1 | 1 | 0 |
| Ornate Hawk-Eagle Spizaetus ornatus | Mississippi Kite Ictinia mississippiensis | 1 | 1 | 0 |
| Ornate Hawk-Eagle Spizaetus ornatus | Plumbeous Kite Ictinia plumbea | 1 | 1 | 0 |
| Snail Kite Rostrhamus sociabilis | Plumbeous Kite Ictinia plumbea | 1 | 1 | 0 |
| Double-toothed Kite Harpagus bidentatus | Plumbeous Kite Ictinia plumbea | 1 | 1 | 0 |
| Mississippi Kite Ictinia mississippiensis | Sharp-shinned Hawk Accipiter striatus | 1 | 1 | 0 |
| Plumbeous Kite Ictinia plumbea | Grey-bellied Hawk Accipiter poliogaster | 1 | 0 | 1 |
| Plumbeous Kite Ictinia plumbea | Common Black Hawk Buteogallus anthracinus | 1 | 1 | 0 |
| Grey-bellied Hawk Accipiter poliogaster | Sharp-shinned Hawk Accipiter striatus | 1 | 1 | 0 |
| Sharp-shinned Hawk Accipiter striatus | Cooper's Hawk Astur cooperii | 1 | 0 | 1 |
| Sharp-shinned Hawk Accipiter striatus | Bicoloured Hawk Astur bicolor | 1 | 0 | 1 |
| Common Black Hawk Buteogallus anthracinus | Savanna Hawk Buteogallus meridionalis | 1 | 1 | 0 |
| Common Black Hawk Buteogallus anthracinus | Roadside Hawk Rupornis magnirostris | 1 | 1 | 0 |
| Savanna Hawk Buteogallus meridionalis | Great Black Hawk Buteogallus urubitinga | 1 | 0 | 1 |
| Barred Hawk Morphnarchus princeps | Harris's Hawk Parabuteo unicinctus | 1 | 1 | 0 |
| Roadside Hawk Rupornis magnirostris | White-tailed Hawk Geranoaetus albicaudatus | 1 | 0 | 1 |
| Roadside Hawk Rupornis magnirostris | Crested Caracara Caracara plancus | 1 | 0 | 1 |
| Roadside Hawk Rupornis magnirostris | Social Flycatcher Myiozetetes similis | 1 | 1 | 0 |
| Harris's Hawk Parabuteo unicinctus | Broad-winged Hawk Buteo platypterus | 1 | 1 | 0 |
| White Hawk Pseudastur albicollis | Broad-winged Hawk Buteo platypterus | 1 | 0 | 1 |
| Semiplumbeous Hawk Leucopternis semiplumbeus | Grey Hawk Buteo plagiatus | 1 | 0 | 1 |
| Grey Hawk Buteo plagiatus | Short-tailed Hawk Buteo brachyurus | 1 | 0 | 1 |
| Broad-winged Hawk Buteo platypterus | Swainson's Hawk Buteo swainsoni | 1 | 0 | 1 |
| Swainson's Hawk Buteo swainsoni | Crested Caracara Caracara plancus | 1 | 0 | 1 |
| American Barn Owl Tyto furcata | Ferruginous Pygmy-Owl Glaucidium brasilianum | 1 | 1 | 0 |
| Bare-shanked Screech-Owl Megascops clarkii | Middle American Screech-Owl Megascops guatemalae | 1 | 1 | 0 |
| Bare-shanked Screech-Owl Megascops clarkii | Pacific Screech-Owl Megascops cooperi | 1 | 0 | 1 |
| Bare-shanked Screech-Owl Megascops clarkii | Ferruginous Pygmy-Owl Glaucidium brasilianum | 1 | 1 | 0 |
| Bare-shanked Screech-Owl Megascops clarkii | Mottled Owl Strix virgata | 1 | 1 | 0 |
| Tropical Screech-Owl Megascops choliba | Middle American Screech-Owl Megascops guatemalae | 1 | 1 | 0 |
| Tropical Screech-Owl Megascops choliba | Ferruginous Pygmy-Owl Glaucidium brasilianum | 1 | 1 | 0 |
| Middle American Screech-Owl Megascops guatemalae | Pacific Screech-Owl Megascops cooperi | 1 | 0 | 1 |
| Pacific Screech-Owl Megascops cooperi | Crested Owl Lophostrix cristata | 1 | 0 | 1 |
| Pacific Screech-Owl Megascops cooperi | Ferruginous Pygmy-Owl Glaucidium brasilianum | 1 | 1 | 0 |
| Pacific Screech-Owl Megascops cooperi | Striped Owl Asio clamator | 1 | 0 | 1 |
| Spectacled Owl Pulsatrix perspicillata | Striped Owl Asio clamator | 1 | 0 | 1 |
| Costa Rican Pygmy-Owl Glaucidium costaricanum | Central American Pygmy-Owl Glaucidium griseiceps | 1 | 0 | 1 |
| Central American Pygmy-Owl Glaucidium griseiceps | Burrowing Owl Athene cunicularia | 1 | 1 | 0 |
| Ferruginous Pygmy-Owl Glaucidium brasilianum | Burrowing Owl Athene cunicularia | 1 | 1 | 0 |
| Mottled Owl Strix virgata | Black-and-white Owl Strix nigrolineata | 1 | 0 | 1 |
| Black-and-white Owl Strix nigrolineata | Striped Owl Asio clamator | 1 | 1 | 0 |
| Slaty-tailed Trogon Trogon massena | Elegant Trogon Trogon elegans | 1 | 1 | 0 |
| Black-headed Trogon Trogon melanocephalus | Baird's Trogon Trogon bairdii | 1 | 0 | 1 |
| Baird's Trogon Trogon bairdii | Elegant Trogon Trogon elegans | 1 | 1 | 0 |
| Baird's Trogon Trogon bairdii | Northern Beardless-Tyrannulet Camptostoma imberbe | 1 | 0 | 1 |
| Gartered Violaceous Trogon Trogon caligatus | Elegant Trogon Trogon elegans | 1 | 0 | 1 |
| Gartered Violaceous Trogon Trogon caligatus | Collared Trogon Trogon collaris | 1 | 0 | 1 |
| Collared Trogon Trogon collaris | Ochre-bellied Flycatcher Mionectes oleagineus | 1 | 1 | 0 |
| Lesson's Motmot Momotus lessonii | Broad-billed Motmot Electron platyrhynchum | 1 | 1 | 0 |
| Rufous Motmot Baryphthengus martii | Keel-billed Motmot Electron carinatum | 1 | 1 | 0 |
| Keel-billed Motmot Electron carinatum | Broad-billed Motmot Electron platyrhynchum | 1 | 0 | 1 |
| Ringed Kingfisher Megaceryle torquata | Green Kingfisher Chloroceryle americana | 1 | 0 | 1 |
| American Pygmy Kingfisher Chloroceryle aenea | Green Kingfisher Chloroceryle americana | 1 | 1 | 0 |
| Green Kingfisher Chloroceryle americana | Green-and-rufous Kingfisher Chloroceryle inda | 1 | 1 | 0 |
| White-necked Puffbird Notharchus hyperrhynchus | White-whiskered Puffbird Malacoptila panamensis | 1 | 1 | 0 |
| Pied Puffbird Notharchus tectus | Lanceolated Monklet Micromonacha lanceolata | 1 | 0 | 1 |
| Lanceolated Monklet Micromonacha lanceolata | White-fronted Nunbird Monasa morphoeus | 1 | 1 | 0 |
| Rufous-tailed Jacamar Galbula ruficauda | Great Jacamar Jacamerops aureus | 1 | 0 | 1 |
| Rufous-tailed Jacamar Galbula ruficauda | Masked Tityra Tityra semifasciata | 1 | 0 | 1 |
| Red-headed Barbet Eubucco bourcierii | Northern Emerald-Toucanet Aulacorhynchus prasinus | 1 | 0 | 1 |
| Prong-billed Barbet Semnornis frantzii | White-shouldered Tanager Loriotus luctuosus | 1 | 0 | 1 |
| Northern Emerald-Toucanet Aulacorhynchus prasinus | Fiery-billed Aracari Pteroglossus frantzii | 1 | 1 | 0 |
| Collared Aracari Pteroglossus torquatus | Keel-billed Toucan Ramphastos sulfuratus | 1 | 1 | 0 |
| Fiery-billed Aracari Pteroglossus frantzii | Yellow-eared Toucanet Selenidera spectabilis | 1 | 0 | 1 |
| Fiery-billed Aracari Pteroglossus frantzii | Keel-billed Toucan Ramphastos sulfuratus | 1 | 1 | 0 |
| Olivaceous Piculet Picumnus olivaceus | Yellow-faced Grassquit Tiaris olivaceus | 1 | 1 | 0 |
| Yellow-bellied Sapsucker Sphyrapicus varius | Red-crowned Woodpecker Melanerpes rubricapillus | 1 | 1 | 0 |
| Acorn Woodpecker Melanerpes formicivorus | Red-crowned Woodpecker Melanerpes rubricapillus | 1 | 1 | 0 |
| Golden-naped Woodpecker Melanerpes chrysauchen | Red-crowned Woodpecker Melanerpes rubricapillus | 1 | 0 | 1 |
| Smoky-brown Woodpecker Leuconotopicus fumigatus | Rufous-winged Woodpecker Piculus simplex | 1 | 0 | 1 |
| Smoky-brown Woodpecker Leuconotopicus fumigatus | Louisiana Waterthrush Parkesia motacilla | 1 | 0 | 1 |
| Cinnamon Woodpecker Celeus loricatus | Rufous-winged Woodpecker Piculus simplex | 1 | 0 | 1 |
| Rufous-winged Woodpecker Piculus simplex | Golden-olive Woodpecker Colaptes rubiginosus | 1 | 0 | 1 |
| Collared Forest-Falcon Micrastur semitorquatus | Barred Forest-Falcon Micrastur ruficollis | 1 | 0 | 1 |
| Red-throated Caracara Ibycter americanus | Yellow-headed Caracara Daptrius chimachima | 1 | 0 | 1 |
| American Kestrel Falco sparverius | Merlin Falco columbarius | 1 | 0 | 1 |
| Aplomado Falcon Falco femoralis | Bat Falcon Falco rufigularis | 1 | 0 | 1 |
| Orange-chinned Parakeet Brotogeris jugularis | Blue-headed Parrot Pionus menstruus | 1 | 0 | 1 |
| Orange-chinned Parakeet Brotogeris jugularis | Great Kiskadee Pitangus sulphuratus | 1 | 0 | 1 |
| Orange-chinned Parakeet Brotogeris jugularis | Black-striped Sparrow Arremonops conirostris | 1 | 1 | 0 |
| Brown-hooded Parrot Pyrilia haematotis | Blue-headed Parrot Pionus menstruus | 1 | 0 | 1 |
| Blue-headed Parrot Pionus menstruus | White-crowned Parrot Pionus senilis | 1 | 0 | 1 |
| Blue-headed Parrot Pionus menstruus | Yellow-naped Amazon Amazona auropalliata | 1 | 1 | 0 |
| White-crowned Parrot Pionus senilis | Red-lored Amazon Amazona autumnalis | 1 | 1 | 0 |
| White-crowned Parrot Pionus senilis | Sulphur-winged Parakeet Pyrrhura hoffmanni | 1 | 1 | 0 |
| White-crowned Parrot Pionus senilis | Social Flycatcher Myiozetetes similis | 1 | 1 | 0 |
| Red-lored Amazon Amazona autumnalis | Mealy Amazon Amazona farinosa | 1 | 1 | 0 |
| Yellow-naped Amazon Amazona auropalliata | Yellow-crowned Amazon Amazona ochrocephala | 1 | 0 | 1 |
| White-fronted Amazon Amazona albifrons | Mealy Amazon Amazona farinosa | 1 | 1 | 0 |
| Sulphur-winged Parakeet Pyrrhura hoffmanni | Brown-throated Parakeet Eupsittula pertinax | 1 | 1 | 0 |
| Olive-throated Parakeet Eupsittula nana | Orange-fronted Parakeet Eupsittula canicularis | 1 | 0 | 1 |
| Great Green Macaw Ara ambiguus | Scarlet Macaw Ara macao | 1 | 1 | 0 |
| Great Green Macaw Ara ambiguus | Crimson-fronted Parakeet Psittacara finschi | 1 | 1 | 0 |
| Fasciated Antshrike Cymbilaimus lineatus | Black-crowned Antshrike Thamnophilus atrinucha | 1 | 1 | 0 |
| Great Antshrike Taraba major | Barred Antshrike Thamnophilus doliatus | 1 | 0 | 1 |
| Great Antshrike Taraba major | Black-crowned Antshrike Thamnophilus atrinucha | 1 | 1 | 0 |
| Barred Antshrike Thamnophilus doliatus | Russet Antshrike Thamnistes anabatinus | 1 | 1 | 0 |
| Barred Antshrike Thamnophilus doliatus | Tawny-capped Euphonia Euphonia anneae | 1 | 1 | 0 |
| Black-crowned Antshrike Thamnophilus atrinucha | Russet Antshrike Thamnistes anabatinus | 1 | 1 | 0 |
| Black-crowned Antshrike Thamnophilus atrinucha | Zeledon's Antbird Hafferia zeledoni | 1 | 1 | 0 |
| Black-hooded Antshrike Thamnophilus bridgesi | Plain Antvireo Dysithamnus mentalis | 1 | 0 | 1 |
| Black-hooded Antshrike Thamnophilus bridgesi | Streak-crowned Antvireo Dysithamnus striaticeps | 1 | 1 | 0 |
| Russet Antshrike Thamnistes anabatinus | Slaty Antwren Myrmotherula schisticolor | 1 | 0 | 1 |
| Streak-crowned Antvireo Dysithamnus striaticeps | Spot-crowned Antvireo Dysithamnus puncticeps | 1 | 1 | 0 |
| Streak-crowned Antvireo Dysithamnus striaticeps | Dusky Antbird Cercomacroides tyrannina | 1 | 0 | 1 |
| Checker-throated Stipplethroat Epinecrophylla fulviventris | Dot-winged Antwren Microrhopias quixensis | 1 | 1 | 0 |
| White-flanked Antwren Myrmotherula axillaris | Dot-winged Antwren Microrhopias quixensis | 1 | 1 | 0 |
| Slaty Antwren Myrmotherula schisticolor | Zeledon's Antbird Hafferia zeledoni | 1 | 1 | 0 |
| Dusky Antbird Cercomacroides tyrannina | Bare-crowned Antbird Gymnocichla nudiceps | 1 | 0 | 1 |
| Bare-crowned Antbird Gymnocichla nudiceps | Zeledon's Antbird Hafferia zeledoni | 1 | 1 | 0 |
| Dull-mantled Antbird Sipia laemosticta | Zeledon's Antbird Hafferia zeledoni | 1 | 1 | 0 |
| Zeledon's Antbird Hafferia zeledoni | Bicoloured Antbird Gymnopithys bicolor | 1 | 0 | 1 |
| Zeledon's Antbird Hafferia zeledoni | Spotted Antbird Hylophylax naevioides | 1 | 1 | 0 |
| Bicoloured Antbird Gymnopithys bicolor | Spotted Antbird Hylophylax naevioides | 1 | 0 | 1 |
| Bicoloured Antbird Gymnopithys bicolor | Black-throated Wren Pheugopedius atrogularis | 1 | 0 | 1 |
| Ocellated Antbird Phaenostictus mcleannani | Streak-chested Antpitta Hylopezus perspicillatus | 1 | 1 | 0 |
| Black-crowned Antpitta Pittasoma michleri | Thicket Antpitta Myrmothera dives | 1 | 1 | 0 |
| Scaled Antpitta Grallaria guatimalensis | Ochre-breasted Antpitta Grallaricula flavirostris | 1 | 1 | 0 |
| Streak-chested Antpitta Hylopezus perspicillatus | Ochre-breasted Antpitta Grallaricula flavirostris | 1 | 0 | 1 |
| Thicket Antpitta Myrmothera dives | Silvery-fronted Tapaculo Scytalopus argentifrons | 1 | 0 | 1 |
| Silvery-fronted Tapaculo Scytalopus argentifrons | Black-faced Antthrush Formicarius analis | 1 | 0 | 1 |
| Silvery-fronted Tapaculo Scytalopus argentifrons | Orange-billed Nightingale-Thrush Catharus aurantiirostris | 1 | 1 | 0 |
| Black-headed Antthrush Formicarius nigricapillus | Middle American Leaftosser Sclerurus mexicanus | 1 | 1 | 0 |
| Scaly-throated Leaftosser Sclerurus guatemalensis | Grey-throated Leaftosser Sclerurus albigularis | 1 | 1 | 0 |
| Highland Tinamou Nothocercus bonapartei | Great Tinamou Tinamus major | 1 | 1 | 0 |
| Grey-throated Leaftosser Sclerurus albigularis | Ruddy Woodcreeper Dendrocincla homochroa | 1 | 1 | 0 |
| Olivaceous Woodcreeper Sittasomus griseicapillus | Wedge-billed Woodcreeper Glyphorynchus spirurus | 1 | 1 | 0 |
| Long-tailed Woodcreeper Deconychura longicauda | Plain-brown Woodcreeper Dendrocincla fuliginosa | 1 | 1 | 0 |
| Ruddy Woodcreeper Dendrocincla homochroa | Plain-brown Woodcreeper Dendrocincla fuliginosa | 1 | 0 | 1 |
| Tawny-winged Woodcreeper Dendrocincla anabatina | Wedge-billed Woodcreeper Glyphorynchus spirurus | 1 | 0 | 1 |
| Tawny-winged Woodcreeper Dendrocincla anabatina | Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | 1 | 0 | 1 |
| Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | Black-banded Woodcreeper Dendrocolaptes picumnus | 1 | 0 | 1 |
| Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | Strong-billed Woodcreeper Xiphocolaptes promeropirhynchus | 1 | 1 | 0 |
| Strong-billed Woodcreeper Xiphocolaptes promeropirhynchus | Cocoa Woodcreeper Xiphorhynchus susurrans | 1 | 0 | 1 |
| Cocoa Woodcreeper Xiphorhynchus susurrans | Black-striped Woodcreeper Xiphorhynchus lachrymosus | 1 | 1 | 0 |
| Streak-headed Woodcreeper Lepidocolaptes souleyetii | Social Flycatcher Myiozetetes similis | 1 | 0 | 1 |
| Streak-headed Woodcreeper Lepidocolaptes souleyetii | Morelet's Seedeater Sporophila morelleti | 1 | 0 | 1 |
| Plain Xenops Xenops minutus | Streak-breasted Treehunter Thripadectes rufobrunneus | 1 | 1 | 0 |
| Buffy Tuftedcheek Pseudocolaptes lawrencii | Streak-breasted Treehunter Thripadectes rufobrunneus | 1 | 1 | 0 |
| Scaly-throated Foliage-gleaner Anabacerthia variegaticeps | Ruddy Foliage-gleaner Clibanornis rubiginosus | 1 | 1 | 0 |
| Lineated Foliage-gleaner Syndactyla subalaris | Chiriqui Foliage-gleaner Automolus exsertus | 1 | 1 | 0 |
| Lineated Foliage-gleaner Syndactyla subalaris | Spotted Barbtail Premnoplex brunnescens | 1 | 1 | 0 |
| Streak-breasted Treehunter Thripadectes rufobrunneus | Fawn-throated Foliage-gleaner Automolus cervinigularis | 1 | 1 | 0 |
| Streak-breasted Treehunter Thripadectes rufobrunneus | Ruddy Treerunner Margarornis rubiginosus | 1 | 1 | 0 |
| Streak-breasted Treehunter Thripadectes rufobrunneus | Spangle-cheeked Tanager Tangara dowii | 1 | 0 | 1 |
| Fawn-throated Foliage-gleaner Automolus cervinigularis | Western Woodhaunter Automolus virgatus | 1 | 0 | 1 |
| Chiriqui Foliage-gleaner Automolus exsertus | Ruddy Treerunner Margarornis rubiginosus | 1 | 1 | 0 |
| Spotted Barbtail Premnoplex brunnescens | Red-faced Spinetail Cranioleuca erythrops | 1 | 1 | 0 |
| Spotted Barbtail Premnoplex brunnescens | Slaty Spinetail Synallaxis brachyura | 1 | 0 | 1 |
| Spotted Barbtail Premnoplex brunnescens | Pale-breasted Spinetail Synallaxis albescens | 1 | 0 | 1 |
| Ruddy Treerunner Margarornis rubiginosus | Grey-breasted Wood-Wren Henicorhina leucophrys | 1 | 1 | 0 |
| White-ruffed Manakin Corapipo altera | White-collared Manakin Manacus candei | 1 | 1 | 0 |
| Velvety Manakin Lepidothrix velutina | Orange-collared Manakin Manacus aurantiacus | 1 | 0 | 1 |
| White-collared Manakin Manacus candei | Red-capped Manakin Ceratopipra mentalis | 1 | 1 | 0 |
| White-collared Manakin Manacus candei | Black-faced Solitaire Myadestes melanops | 1 | 1 | 0 |
| Orange-collared Manakin Manacus aurantiacus | Golden-bellied Flycatcher Myiodynastes hemichrysus | 1 | 1 | 0 |
| White-crowned Manakin Pseudopipra pipra | Red-capped Manakin Ceratopipra mentalis | 1 | 1 | 0 |
| Purple-throated Fruitcrow Querula purpurata | Bare-necked Umbrellabird Cephalopterus glabricollis | 1 | 0 | 1 |
| Purple-throated Fruitcrow Querula purpurata | Lovely Cotinga Cotinga amabilis | 1 | 0 | 1 |