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 |
|---|---|---|---|---|
| Least Flycatcher Empidonax minimus | Hammond's Flycatcher Empidonax hammondii | 14 | 9 | 5 |
| Tropical Kingbird Tyrannus melancholicus | Couch's Kingbird Tyrannus couchii | 12 | 4 | 8 |
| Northern Tropical Pewee Contopus bogotensis | Eastern Wood-Pewee Contopus virens | 11 | 5 | 6 |
| Northern Beardless-Tyrannulet Camptostoma imberbe | Yellow-bellied Elaenia Elaenia flavogaster | 11 | 6 | 5 |
| Greater Pewee Contopus pertinax | Western Wood-Pewee Contopus sordidulus | 10 | 1 | 9 |
| Ruby-throated Hummingbird Archilochus colubris | Broad-tailed Hummingbird Selasphorus platycercus | 8 | 4 | 4 |
| Wedge-tailed Sabrewing Pampa curvipennis | Crowned Woodnymph Thalurania colombica | 8 | 8 | 0 |
| Great Crested Flycatcher Myiarchus crinitus | Brown-crested Flycatcher Myiarchus tyrannulus | 8 | 5 | 3 |
| Buff-throated Saltator Saltator maximus | Cinnamon-bellied Saltator Saltator grandis | 7 | 2 | 5 |
| Yucatan Flycatcher Myiarchus yucatanensis | Great Crested Flycatcher Myiarchus crinitus | 7 | 3 | 4 |
| Yellowish Flycatcher Empidonax flavescens | Buff-breasted Flycatcher Empidonax fulvifrons | 7 | 5 | 2 |
| Stripe-tailed Hummingbird Eupherusa eximia | Berylline Hummingbird Saucerottia beryllina | 6 | 2 | 4 |
| Western Wood-Pewee Contopus sordidulus | Northern Tropical Pewee Contopus bogotensis | 6 | 4 | 2 |
| Yucatan Flycatcher Myiarchus yucatanensis | Dusky-capped Flycatcher Myiarchus tuberculifer | 6 | 1 | 5 |
| Crowned Woodnymph Thalurania colombica | Azure-crowned Hummingbird Saucerottia cyanocephala | 6 | 0 | 6 |
| Variable Seedeater Sporophila corvina | Morelet's Seedeater Sporophila morelleti | 5 | 3 | 2 |
| Greenish Elaenia Myiopagis viridicata | Mountain Elaenia Elaenia frantzii | 5 | 1 | 4 |
| Mountain Elaenia Elaenia frantzii | Guatemalan Tyrannulet Zimmerius vilissimus | 5 | 4 | 1 |
| Green-throated Mountain-gem Lampornis viridipallens | Ruby-throated Hummingbird Archilochus colubris | 5 | 2 | 3 |
| Amethyst-throated Mountain-gem Lampornis amethystinus | Broad-tailed Hummingbird Selasphorus platycercus | 5 | 1 | 4 |
| Couch's Kingbird Tyrannus couchii | Western Kingbird Tyrannus verticalis | 5 | 0 | 5 |
| Western Wood-Pewee Contopus sordidulus | Eastern Wood-Pewee Contopus virens | 5 | 4 | 1 |
| Slate-headed Tody-Flycatcher Poecilotriccus sylvia | Yellow-olive Flatbill Tolmomyias sulphurescens | 5 | 3 | 2 |
| Greater Pewee Contopus pertinax | Northern Tropical Pewee Contopus bogotensis | 5 | 3 | 2 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Brown-crested Flycatcher Myiarchus tyrannulus | 4 | 3 | 1 |
| Herring Gull Larus argentatus | California Gull Larus californicus | 4 | 2 | 2 |
| Great Kiskadee Pitangus sulphuratus | Boat-billed Flycatcher Megarynchus pitangua | 4 | 2 | 2 |
| Blue-black Grassquit Volatinia jacarina | Variable Seedeater Sporophila corvina | 4 | 4 | 0 |
| Black-headed Saltator Saltator atriceps | Cinnamon-bellied Saltator Saltator grandis | 4 | 3 | 1 |
| Broad-tailed Hummingbird Selasphorus platycercus | Wine-throated Hummingbird Selasphorus ellioti | 4 | 2 | 2 |
| Canivet's Emerald Cynanthus canivetii | White-eared Hummingbird Basilinna leucotis | 4 | 2 | 2 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Northern Beardless-Tyrannulet Camptostoma imberbe | 4 | 0 | 4 |
| Northern Bentbill Oncostoma cinereigulare | Yellow-olive Flatbill Tolmomyias sulphurescens | 4 | 4 | 0 |
| Rufous-capped Warbler Basileuterus rufifrons | Chestnut-capped Warbler Basileuterus delattrii | 4 | 1 | 3 |
| Ochre-bellied Flycatcher Mionectes oleagineus | Sepia-capped Flycatcher Leptopogon amaurocephalus | 4 | 2 | 2 |
| Stub-tailed Spadebill Platyrinchus cancrominus | Ochre-bellied Flycatcher Mionectes oleagineus | 4 | 1 | 3 |
| Red-billed Pigeon Patagioenas flavirostris | Short-billed Pigeon Patagioenas nigrirostris | 4 | 3 | 1 |
| Cinnamon Hummingbird Amazilia rutila | Rufous-tailed Hummingbird Amazilia tzacatl | 4 | 4 | 0 |
| Berylline Hummingbird Saucerottia beryllina | Rufous-tailed Hummingbird Amazilia tzacatl | 4 | 1 | 3 |
| Mangrove Cuckoo Coccyzus minor | Grey-capped Cuckoo Coccyzus lansbergi | 4 | 4 | 0 |
| Ruddy-breasted Seedeater Sporophila minuta | Thick-billed Seed-Finch Sporophila funerea | 4 | 1 | 3 |
| Elegant Tern Thalasseus elegans | Royal Tern Thalasseus maximus | 4 | 2 | 2 |
| Long-billed Hermit Phaethornis longirostris | Stripe-throated Hermit Phaethornis striigularis | 4 | 2 | 2 |
| Northern Beardless-Tyrannulet Camptostoma imberbe | Greenish Elaenia Myiopagis viridicata | 3 | 1 | 2 |
| Guatemalan Tyrannulet Zimmerius vilissimus | Mistletoe Tyrannulet Zimmerius parvus | 3 | 1 | 2 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Hammond's Flycatcher Empidonax hammondii | 3 | 2 | 1 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Yellowish Flycatcher Empidonax flavescens | 3 | 3 | 0 |
| Alder Flycatcher Empidonax alnorum | White-throated Flycatcher Empidonax albigularis | 3 | 3 | 0 |
| Yucatan Flycatcher Myiarchus yucatanensis | Brown-crested Flycatcher Myiarchus tyrannulus | 3 | 3 | 0 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Ash-throated Flycatcher Myiarchus cinerascens | 3 | 3 | 0 |
| Great Kiskadee Pitangus sulphuratus | Social Flycatcher Myiozetetes similis | 3 | 2 | 1 |
| Sulphur-bellied Flycatcher Myiodynastes luteiventris | Piratic Flycatcher Legatus leucophaius | 3 | 3 | 0 |
| Cassin's Kingbird Tyrannus vociferans | Western Kingbird Tyrannus verticalis | 3 | 1 | 2 |
| Philadelphia Vireo Vireo philadelphicus | Brown-capped Vireo Vireo leucophrys | 3 | 1 | 2 |
| Blue Ground Dove Claravis pretiosa | Maroon-chested Ground Dove Paraclaravis mondetoura | 3 | 0 | 3 |
| Pale-vented Pigeon Patagioenas cayennensis | Red-billed Pigeon Patagioenas flavirostris | 3 | 2 | 1 |
| Crowned Woodnymph Thalurania colombica | Berylline Hummingbird Saucerottia beryllina | 3 | 3 | 0 |
| Ruddy Quail-Dove Geotrygon montana | White-faced Quail-Dove Zentrygon albifacies | 3 | 0 | 3 |
| Azure-crowned Hummingbird Saucerottia cyanocephala | Berylline Hummingbird Saucerottia beryllina | 3 | 3 | 0 |
| Mexican Violetear Colibri thalassinus | Green-breasted Mango Anthracothorax prevostii | 3 | 1 | 2 |
| Masked Booby Sula dactylatra | Nazca Booby Sula granti | 3 | 1 | 2 |
| Olivaceous Woodcreeper Sittasomus griseicapillus | Ruddy Woodcreeper Dendrocincla homochroa | 3 | 3 | 0 |
| Red-billed Pigeon Patagioenas flavirostris | Band-tailed Pigeon Patagioenas fasciata | 3 | 3 | 0 |
| Tawny-winged Woodcreeper Dendrocincla anabatina | Wedge-billed Woodcreeper Glyphorynchus spirurus | 3 | 1 | 2 |
| Little Blue Heron Egretta caerulea | Reddish Egret Egretta rufescens | 3 | 3 | 0 |
| Green-breasted Mango Anthracothorax prevostii | Plain-capped Starthroat Heliomaster constantii | 3 | 1 | 2 |
| Bullock's Oriole Icterus bullockii | Altamira Oriole Icterus gularis | 3 | 2 | 1 |
| Spot-breasted Oriole Icterus pectoralis | Altamira Oriole Icterus gularis | 3 | 2 | 1 |
| Plain-capped Starthroat Heliomaster constantii | Amethyst-throated Mountain-gem Lampornis amethystinus | 3 | 1 | 2 |
| Green-throated Mountain-gem Lampornis viridipallens | Amethyst-throated Mountain-gem Lampornis amethystinus | 3 | 2 | 1 |
| Stub-tailed Spadebill Platyrinchus cancrominus | Sepia-capped Flycatcher Leptopogon amaurocephalus | 3 | 3 | 0 |
| Sepia-capped Flycatcher Leptopogon amaurocephalus | Northern Bentbill Oncostoma cinereigulare | 3 | 2 | 1 |
| Hepatic Tanager Piranga flava | Summer Tanager Piranga rubra | 3 | 2 | 1 |
| Northern Bentbill Oncostoma cinereigulare | Slate-headed Tody-Flycatcher Poecilotriccus sylvia | 3 | 2 | 1 |
| Slate-headed Tody-Flycatcher Poecilotriccus sylvia | Common Tody-Flycatcher Todirostrum cinereum | 3 | 2 | 1 |
| Blue Bunting Cyanocompsa parellina | Indigo Bunting Passerina cyanea | 3 | 0 | 3 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Yellow-bellied Tyrannulet Ornithion semiflavum | 3 | 0 | 3 |
| Grey-headed Tanager Eucometis penicillata | Black-throated Shrike-Tanager Lanio aurantius | 3 | 2 | 1 |
| Black-throated Shrike-Tanager Lanio aurantius | Scarlet-rumped Tanager Ramphocelus passerinii | 3 | 0 | 3 |
| Blue-grey Tanager Thraupis episcopus | Azure-rumped Tanager Poecilostreptus cabanisi | 3 | 1 | 2 |
| Greenish Elaenia Myiopagis viridicata | Yellow-bellied Elaenia Elaenia flavogaster | 3 | 3 | 0 |
| Blue-black Grassquit Volatinia jacarina | Thick-billed Seed-Finch Sporophila funerea | 3 | 3 | 0 |
| Yucatan Flycatcher Myiarchus yucatanensis | Nutting's Flycatcher Myiarchus nuttingi | 2 | 2 | 0 |
| Grey Hawk Buteo plagiatus | Broad-winged Hawk Buteo platypterus | 2 | 1 | 1 |
| Stripe-tailed Hummingbird Eupherusa eximia | Azure-crowned Hummingbird Saucerottia cyanocephala | 2 | 1 | 1 |
| Grey-breasted Martin Progne chalybea | Northern Rough-winged Swallow Stelgidopteryx serripennis | 2 | 0 | 2 |
| Black Storm-Petrel Hydrobates melania | Markham's Storm-Petrel Hydrobates markhami | 2 | 0 | 2 |
| Central American Pygmy-Owl Glaucidium griseiceps | Ferruginous Pygmy-Owl Glaucidium brasilianum | 2 | 0 | 2 |
| Common Ground Dove Columbina passerina | Ruddy Ground Dove Columbina talpacoti | 2 | 2 | 0 |
| Bulwer's Petrel Bulweria bulwerii | Wedge-tailed Shearwater Ardenna pacifica | 2 | 2 | 0 |
| Stripe-tailed Hummingbird Eupherusa eximia | White-bellied Emerald Chlorestes candida | 2 | 0 | 2 |
| Wedge-tailed Shearwater Ardenna pacifica | Sooty Shearwater Ardenna grisea | 2 | 0 | 2 |
| Wedge-tailed Shearwater Ardenna pacifica | Galapagos Shearwater Puffinus subalaris | 2 | 1 | 1 |
| Olive-throated Parakeet Eupsittula nana | Green Parakeet Psittacara holochlorus | 2 | 1 | 1 |
| Vermilion Flycatcher Pyrocephalus rubinus | Bright-rumped Attila Attila spadiceus | 2 | 2 | 0 |
| Northern House Wren Troglodytes aedon | Rufous-browed Wren Troglodytes rufociliatus | 2 | 0 | 2 |
| Buff-throated Saltator Saltator maximus | Black-headed Saltator Saltator atriceps | 2 | 0 | 2 |
| Black-crowned Antshrike Thamnophilus atrinucha | Slaty Antwren Myrmotherula schisticolor | 2 | 2 | 0 |
| Grass Wren Cistothorus platensis | Band-backed Wren Campylorhynchus zonatus | 2 | 2 | 0 |
| Northern Beardless-Tyrannulet Camptostoma imberbe | Mountain Elaenia Elaenia frantzii | 2 | 2 | 0 |
| Rufous-naped Wren Campylorhynchus rufinucha | Spot-breasted Wren Pheugopedius maculipectus | 2 | 1 | 1 |
| Rufous-and-white Wren Thryophilus rufalbus | Cabanis's Wren Cantorchilus modestus | 2 | 2 | 0 |
| Berylline Hummingbird Saucerottia beryllina | Cinnamon Hummingbird Amazilia rutila | 2 | 1 | 1 |
| Say's Phoebe Sayornis saya | Vermilion Flycatcher Pyrocephalus rubinus | 2 | 2 | 0 |
| Cabanis's Wren Cantorchilus modestus | White-breasted Wood-Wren Henicorhina leucosticta | 2 | 2 | 0 |
| Dusky Antbird Cercomacroides tyrannina | Mayan Antthrush Formicarius moniliger | 2 | 0 | 2 |
| White-bellied Wren Uropsila leucogastra | White-breasted Wood-Wren Henicorhina leucosticta | 2 | 2 | 0 |
| Common Ground Dove Columbina passerina | Plain-breasted Ground Dove Columbina minuta | 2 | 1 | 1 |
| Blue-and-white Mockingbird Melanotis hypoleucus | Tropical Mockingbird Mimus gilvus | 2 | 1 | 1 |
| Purple-crowned Fairy Heliothryx barroti | Green-breasted Mango Anthracothorax prevostii | 2 | 0 | 2 |
| Orange-billed Nightingale-Thrush Catharus aurantiirostris | Black-headed Nightingale-Thrush Catharus mexicanus | 2 | 1 | 1 |
| Black-headed Nightingale-Thrush Catharus mexicanus | Yellow-throated Nightingale-Thrush Catharus dryas | 2 | 0 | 2 |
| Canivet's Emerald Cynanthus canivetii | Wedge-tailed Sabrewing Pampa curvipennis | 2 | 1 | 1 |
| Short-tailed Hawk Buteo brachyurus | Swainson's Hawk Buteo swainsoni | 2 | 2 | 0 |
| Purple-crowned Fairy Heliothryx barroti | Plain-capped Starthroat Heliomaster constantii | 2 | 2 | 0 |
| Cinnamon-bellied Flowerpiercer Diglossa baritula | Slaty Finch Haplospiza rustica | 2 | 1 | 1 |
| Ruby-throated Hummingbird Archilochus colubris | Canivet's Emerald Cynanthus canivetii | 2 | 2 | 0 |
| Elegant Euphonia Chlorophonia elegantissima | Blue-crowned Chlorophonia Chlorophonia occipitalis | 2 | 1 | 1 |
| Rufous-tailed Hummingbird Amazilia tzacatl | White-bellied Emerald Chlorestes candida | 2 | 1 | 1 |
| Slaty Finch Haplospiza rustica | Blue-black Grassquit Volatinia jacarina | 2 | 2 | 0 |
| Scrub Euphonia Euphonia affinis | Yellow-throated Euphonia Euphonia hirundinacea | 2 | 0 | 2 |
| White-tipped Dove Leptotila verreauxi | Grey-headed Dove Leptotila plumbeiceps | 2 | 2 | 0 |
| White Ibis Eudocimus albus | White-faced Ibis Plegadis chihi | 2 | 0 | 2 |
| Black-banded Woodcreeper Dendrocolaptes picumnus | Strong-billed Woodcreeper Xiphocolaptes promeropirhynchus | 2 | 1 | 1 |
| Red Knot Calidris canutus | Surfbird Calidris virgata | 2 | 1 | 1 |
| King Vulture Sarcoramphus papa | Lesser Yellow-headed Vulture Cathartes burrovianus | 2 | 1 | 1 |
| Great Potoo Nyctibius grandis | Northern Potoo Nyctibius jamaicensis | 2 | 0 | 2 |
| Chipping Sparrow Spizella passerina | Clay-coloured Sparrow Spizella pallida | 2 | 1 | 1 |
| Rivoli's Hummingbird Eugenes fulgens | Green-throated Mountain-gem Lampornis viridipallens | 2 | 2 | 0 |
| Rivoli's Hummingbird Eugenes fulgens | Amethyst-throated Mountain-gem Lampornis amethystinus | 2 | 2 | 0 |
| Scaly-throated Foliage-gleaner Anabacerthia variegaticeps | Ruddy Foliage-gleaner Clibanornis rubiginosus | 2 | 2 | 0 |
| Chestnut-headed Oropendola Psarocolius wagleri | Montezuma Oropendola Psarocolius montezuma | 2 | 1 | 1 |
| Ruddy Foliage-gleaner Clibanornis rubiginosus | Rufous-breasted Spinetail Synallaxis erythrothorax | 2 | 1 | 1 |
| Fawn-throated Foliage-gleaner Automolus cervinigularis | Red-capped Manakin Ceratopipra mentalis | 2 | 0 | 2 |
| Long-tailed Manakin Chiroxiphia linearis | Red-capped Manakin Ceratopipra mentalis | 2 | 2 | 0 |
| Black Swift Cypseloides niger | White-fronted Swift Cypseloides storeri | 2 | 1 | 1 |
| Grey Plover Pluvialis squatarola | American Golden Plover Pluvialis dominica | 2 | 0 | 2 |
| Northern Tropical Pewee Contopus bogotensis | Yellow-bellied Flycatcher Empidonax flaviventris | 2 | 1 | 1 |
| Grey Hawk Buteo plagiatus | Short-tailed Hawk Buteo brachyurus | 2 | 0 | 2 |
| Buff-breasted Flycatcher Empidonax fulvifrons | Vermilion Flycatcher Pyrocephalus rubinus | 2 | 1 | 1 |
| Greater Pewee Contopus pertinax | Eastern Wood-Pewee Contopus virens | 2 | 2 | 0 |
| Baird's Sandpiper Calidris bairdii | Least Sandpiper Calidris minutilla | 2 | 1 | 1 |
| Inca Dove Columbina inca | Common Ground Dove Columbina passerina | 2 | 1 | 1 |
| Pine Flycatcher Empidonax affinis | Yellowish Flycatcher Empidonax flavescens | 2 | 2 | 0 |
| Double-toothed Kite Harpagus bidentatus | Plumbeous Kite Ictinia plumbea | 2 | 1 | 1 |
| Nashville Warbler Leiothlypis ruficapilla | Virginia's Warbler Leiothlypis virginiae | 2 | 0 | 2 |
| White-winged Becard Pachyramphus polychopterus | Grey-collared Becard Pachyramphus major | 2 | 0 | 2 |
| Mississippi Kite Ictinia mississippiensis | Plumbeous Kite Ictinia plumbea | 2 | 0 | 2 |
| Short-tailed Nighthawk Lurocalis semitorquatus | Spot-tailed Nightjar Antiurus maculicaudus | 2 | 2 | 0 |
| Bearded Screech-Owl Megascops barbarus | Pacific Screech-Owl Megascops cooperi | 2 | 1 | 1 |
| Little Gull Hydrocoloeus minutus | Sabine's Gull Xema sabini | 2 | 2 | 0 |
| Ruddy-breasted Seedeater Sporophila minuta | Variable Seedeater Sporophila corvina | 2 | 1 | 1 |
| Least Flycatcher Empidonax minimus | Yellowish Flycatcher Empidonax flavescens | 2 | 2 | 0 |
| Crane Hawk Geranospiza caerulescens | Common Black Hawk Buteogallus anthracinus | 2 | 1 | 1 |
| Swallow-tailed Gull Creagrus furcatus | Sabine's Gull Xema sabini | 2 | 1 | 1 |
| Golden-browed Warbler Basileuterus belli | Golden-crowned Warbler Basileuterus culicivorus | 2 | 1 | 1 |
| Ruddy-breasted Seedeater Sporophila minuta | Morelet's Seedeater Sporophila morelleti | 2 | 2 | 0 |
| Painted Redstart Myioborus pictus | Slate-throated Redstart Myioborus miniatus | 2 | 1 | 1 |
| Rose-throated Tanager Piranga roseogularis | Hepatic Tanager Piranga flava | 2 | 2 | 0 |
| Thick-billed Seed-Finch Sporophila funerea | Variable Seedeater Sporophila corvina | 2 | 0 | 2 |
| Sparkling-tailed Hummingbird Tilmatura dupontii | Slender Sheartail Doricha enicura | 2 | 0 | 2 |
| Thick-billed Seed-Finch Sporophila funerea | Morelet's Seedeater Sporophila morelleti | 2 | 0 | 2 |
| Whiskered Screech-Owl Megascops trichopsis | Middle American Screech-Owl Megascops guatemalae | 2 | 0 | 2 |
| Nicaraguan Seed-Finch Sporophila nuttingi | Morelet's Seedeater Sporophila morelleti | 2 | 0 | 2 |
| Flame-coloured Tanager Piranga bidentata | White-winged Tanager Piranga leucoptera | 2 | 2 | 0 |
| White-winged Tanager Piranga leucoptera | Black-faced Grosbeak Caryothraustes poliogaster | 2 | 2 | 0 |
| Red-crowned Ant-Tanager Habia rubica | Red-throated Ant-Tanager Driophlox fuscicauda | 2 | 1 | 1 |
| Long-tailed Skua Stercorarius longicaudus | Swallow-tailed Gull Creagrus furcatus | 2 | 2 | 0 |
| Blue Seedeater Amaurospiza concolor | Blue-black Grosbeak Cyanoloxia cyanoides | 2 | 1 | 1 |
| Blue Seedeater Amaurospiza concolor | Blue Bunting Cyanocompsa parellina | 2 | 2 | 0 |
| Common Tody-Flycatcher Todirostrum cinereum | Yellow-olive Flatbill Tolmomyias sulphurescens | 2 | 1 | 1 |
| Olive-sided Flycatcher Contopus cooperi | Western Wood-Pewee Contopus sordidulus | 2 | 1 | 1 |
| Eye-ringed Flatbill Rhynchocyclus brevirostris | Yellow-olive Flatbill Tolmomyias sulphurescens | 2 | 1 | 1 |
| Variable Seedeater Sporophila corvina | Yellow-faced Grassquit Tiaris olivaceus | 2 | 1 | 1 |
| Willow Flycatcher Empidonax traillii | White-throated Flycatcher Empidonax albigularis | 2 | 2 | 0 |
| Social Flycatcher Myiozetetes similis | Piratic Flycatcher Legatus leucophaius | 2 | 1 | 1 |
| Wine-throated Hummingbird Selasphorus ellioti | White-eared Hummingbird Basilinna leucotis | 2 | 1 | 1 |
| Sulphur-bellied Flycatcher Myiodynastes luteiventris | Tropical Kingbird Tyrannus melancholicus | 2 | 0 | 2 |
| Wedge-tailed Sabrewing Pampa curvipennis | Rufous Sabrewing Pampa rufa | 2 | 0 | 2 |
| Common Pauraque Nyctidromus albicollis | Yucatan Nightjar Antrostomus badius | 2 | 1 | 1 |
| Nutting's Flycatcher Myiarchus nuttingi | Brown-crested Flycatcher Myiarchus tyrannulus | 2 | 1 | 1 |
| Slaty-tailed Trogon Trogon massena | Collared Trogon Trogon collaris | 2 | 1 | 1 |
| Plain-breasted Ground Dove Columbina minuta | Ruddy Ground Dove Columbina talpacoti | 2 | 0 | 2 |
| Black-headed Trogon Trogon melanocephalus | Gartered Violaceous Trogon Trogon caligatus | 2 | 0 | 2 |
| White-collared Swift Streptoprocne zonaris | Chimney Swift Chaetura pelagica | 2 | 1 | 1 |
| Western Gull Larus occidentalis | Lesser Black-backed Gull Larus fuscus | 2 | 2 | 0 |
| Ash-throated Flycatcher Myiarchus cinerascens | Brown-crested Flycatcher Myiarchus tyrannulus | 2 | 2 | 0 |
| Least Grebe Tachybaptus dominicus | Atitlan Grebe Podilymbus gigas | 2 | 0 | 2 |
| Eastern Kingbird Tyrannus tyrannus | Fork-tailed Flycatcher Tyrannus savana | 2 | 0 | 2 |
| Mottled Owl Strix virgata | Fulvous Owl Strix fulvescens | 2 | 2 | 0 |
| Blue-throated Motmot Aspatha gularis | Broad-billed Motmot Electron platyrhynchum | 2 | 0 | 2 |
| Emerald-chinned Hummingbird Abeillia abeillei | Crowned Woodnymph Thalurania colombica | 2 | 2 | 0 |
| Lesson's Motmot Momotus lessonii | Broad-billed Motmot Electron platyrhynchum | 2 | 1 | 1 |
| Lesson's Motmot Momotus lessonii | Turquoise-browed Motmot Eumomota superciliosa | 2 | 1 | 1 |
| Violet Sabrewing Campylopterus hemileucurus | Crowned Woodnymph Thalurania colombica | 2 | 0 | 2 |
| Violet Sabrewing Campylopterus hemileucurus | Stripe-tailed Hummingbird Eupherusa eximia | 2 | 2 | 0 |
| Blue-headed Vireo Vireo solitarius | Plumbeous Vireo Vireo plumbeus | 2 | 1 | 1 |
| American Pygmy Kingfisher Chloroceryle aenea | Green Kingfisher Chloroceryle americana | 2 | 0 | 2 |
| Philadelphia Vireo Vireo philadelphicus | Warbling Vireo Vireo gilvus | 2 | 1 | 1 |
| Dunlin Calidris alpina | Baird's Sandpiper Calidris bairdii | 2 | 1 | 1 |
| Arctic Tern Sterna paradisaea | Sandwich Tern Thalasseus sandvicensis | 2 | 1 | 1 |
| Morelet's Seedeater Sporophila morelleti | Yellow-faced Grassquit Tiaris olivaceus | 2 | 0 | 2 |
| Wandering Tattler Tringa incana | Willet Tringa semipalmata | 2 | 1 | 1 |
| Yucatan Woodpecker Melanerpes pygmaeus | Golden-fronted Woodpecker Melanerpes aurifrons | 2 | 1 | 1 |
| Dusky-capped Flycatcher Myiarchus tuberculifer | Great Crested Flycatcher Myiarchus crinitus | 2 | 1 | 1 |
| Tree Swallow Tachycineta bicolor | Violet-green Swallow Tachycineta thalassina | 2 | 0 | 2 |
| Black-banded Woodcreeper Dendrocolaptes picumnus | Ivory-billed Woodcreeper Xiphorhynchus flavigaster | 1 | 1 | 0 |
| Ivory-billed Woodcreeper Xiphorhynchus flavigaster | Streak-headed Woodcreeper Lepidocolaptes souleyetii | 1 | 0 | 1 |
| Ivory-billed Woodcreeper Xiphorhynchus flavigaster | Spot-crowned Woodcreeper Lepidocolaptes affinis | 1 | 1 | 0 |
| Plain Xenops Xenops minutus | Scaly-throated Foliage-gleaner Anabacerthia variegaticeps | 1 | 0 | 1 |
| Plain Xenops Xenops minutus | Fawn-throated Foliage-gleaner Automolus cervinigularis | 1 | 0 | 1 |
| White-collared Manakin Manacus candei | Red-capped Manakin Ceratopipra mentalis | 1 | 1 | 0 |
| White-collared Manakin Manacus candei | Rose-throated Becard Pachyramphus aglaiae | 1 | 0 | 1 |
| Lovely Cotinga Cotinga amabilis | Rufous Piha Lipaugus unirufus | 1 | 0 | 1 |
| Black-crowned Tityra Tityra inquisitor | Masked Tityra Tityra semifasciata | 1 | 0 | 1 |
| Black-crowned Tityra Tityra inquisitor | White-winged Becard Pachyramphus polychopterus | 1 | 1 | 0 |
| Masked Tityra Tityra semifasciata | Blue-black Grassquit Volatinia jacarina | 1 | 1 | 0 |
| Speckled Mourner Laniocera rufescens | Cinnamon Becard Pachyramphus cinnamomeus | 1 | 0 | 1 |
| Cinnamon Becard Pachyramphus cinnamomeus | Grey-collared Becard Pachyramphus major | 1 | 0 | 1 |
| White-winged Becard Pachyramphus polychopterus | Sulphur-rumped Flycatcher Myiobius sulphureipygius | 1 | 0 | 1 |
| Tropical Royal Flycatcher Onychorhynchus coronatus | Stub-tailed Spadebill Platyrinchus cancrominus | 1 | 1 | 0 |
| Ruddy-tailed Flycatcher Terenotriccus erythrurus | Sulphur-rumped Flycatcher Myiobius sulphureipygius | 1 | 0 | 1 |
| Ochre-bellied Flycatcher Mionectes oleagineus | Northern Bentbill Oncostoma cinereigulare | 1 | 1 | 0 |
| Sepia-capped Flycatcher Leptopogon amaurocephalus | Slate-headed Tody-Flycatcher Poecilotriccus sylvia | 1 | 1 | 0 |
| Yellow-olive Flatbill Tolmomyias sulphurescens | Greenish Elaenia Myiopagis viridicata | 1 | 1 | 0 |
| Yellow-bellied Tyrannulet Ornithion semiflavum | Greenish Elaenia Myiopagis viridicata | 1 | 0 | 1 |
| Yellow-bellied Tyrannulet Ornithion semiflavum | Yellow-bellied Elaenia Elaenia flavogaster | 1 | 1 | 0 |
| Greenish Elaenia Myiopagis viridicata | Guatemalan Tyrannulet Zimmerius vilissimus | 1 | 1 | 0 |
| Yellow-bellied Elaenia Elaenia flavogaster | Mountain Elaenia Elaenia frantzii | 1 | 0 | 1 |
| Mountain Elaenia Elaenia frantzii | Mistletoe Tyrannulet Zimmerius parvus | 1 | 1 | 0 |
| Mountain Elaenia Elaenia frantzii | Tufted Flycatcher Mitrephanes phaeocercus | 1 | 0 | 1 |
| Guatemalan Tyrannulet Zimmerius vilissimus | Olive-sided Flycatcher Contopus cooperi | 1 | 0 | 1 |
| Tufted Flycatcher Mitrephanes phaeocercus | Greater Pewee Contopus pertinax | 1 | 1 | 0 |
| Olive-sided Flycatcher Contopus cooperi | Greater Pewee Contopus pertinax | 1 | 0 | 1 |
| Olive-sided Flycatcher Contopus cooperi | Northern Tropical Pewee Contopus bogotensis | 1 | 1 | 0 |
| Eastern Wood-Pewee Contopus virens | Hammond's Flycatcher Empidonax hammondii | 1 | 1 | 0 |
| Yellow-bellied Flycatcher Empidonax flaviventris | Least Flycatcher Empidonax minimus | 1 | 1 | 0 |
| Acadian Flycatcher Empidonax virescens | Alder Flycatcher Empidonax alnorum | 1 | 1 | 0 |
| Alder Flycatcher Empidonax alnorum | Least Flycatcher Empidonax minimus | 1 | 1 | 0 |
| White-throated Flycatcher Empidonax albigularis | Hammond's Flycatcher Empidonax hammondii | 1 | 1 | 0 |
| White-throated Flycatcher Empidonax albigularis | Pine Flycatcher Empidonax affinis | 1 | 1 | 0 |
| Least Flycatcher Empidonax minimus | Pine Flycatcher Empidonax affinis | 1 | 0 | 1 |
| Hammond's Flycatcher Empidonax hammondii | Yellowish Flycatcher Empidonax flavescens | 1 | 0 | 1 |
| Hammond's Flycatcher Empidonax hammondii | Buff-breasted Flycatcher Empidonax fulvifrons | 1 | 0 | 1 |
| Buff-breasted Flycatcher Empidonax fulvifrons | Bright-rumped Attila Attila spadiceus | 1 | 1 | 0 |
| Yucatan Flycatcher Myiarchus yucatanensis | Ash-throated Flycatcher Myiarchus cinerascens | 1 | 1 | 0 |
| Ash-throated Flycatcher Myiarchus cinerascens | Nutting's Flycatcher Myiarchus nuttingi | 1 | 0 | 1 |
| Nutting's Flycatcher Myiarchus nuttingi | Great Crested Flycatcher Myiarchus crinitus | 1 | 1 | 0 |
| Great Crested Flycatcher Myiarchus crinitus | Boat-billed Flycatcher Megarynchus pitangua | 1 | 1 | 0 |
| Tropical Kingbird Tyrannus melancholicus | Western Kingbird Tyrannus verticalis | 1 | 0 | 1 |
| Couch's Kingbird Tyrannus couchii | Cassin's Kingbird Tyrannus vociferans | 1 | 1 | 0 |
| Couch's Kingbird Tyrannus couchii | Thick-billed Kingbird Tyrannus crassirostris | 1 | 0 | 1 |
| Cassin's Kingbird Tyrannus vociferans | Thick-billed Kingbird Tyrannus crassirostris | 1 | 1 | 0 |
| Thick-billed Kingbird Tyrannus crassirostris | Western Kingbird Tyrannus verticalis | 1 | 1 | 0 |
| Thick-billed Kingbird Tyrannus crassirostris | Eastern Kingbird Tyrannus tyrannus | 1 | 1 | 0 |
| Western Kingbird Tyrannus verticalis | Scissor-tailed Flycatcher Tyrannus forficatus | 1 | 0 | 1 |
| Rufous-browed Peppershrike Cyclarhis gujanensis | Tawny-crowned Greenlet Tunchiornis ochraceiceps | 1 | 0 | 1 |
| Green Shrike-Vireo Vireolanius pulchellus | Lesser Greenlet Pachysylvia decurtata | 1 | 0 | 1 |
| White-eyed Vireo Vireo griseus | Mangrove Vireo Vireo pallens | 1 | 0 | 1 |
| Mangrove Vireo Vireo pallens | Hutton's Vireo Vireo huttoni | 1 | 1 | 0 |
| Bell's Vireo Vireo bellii | Hutton's Vireo Vireo huttoni | 1 | 1 | 0 |
| Bell's Vireo Vireo bellii | Blue-headed Vireo Vireo solitarius | 1 | 1 | 0 |
| Hutton's Vireo Vireo huttoni | Plumbeous Vireo Vireo plumbeus | 1 | 1 | 0 |
| Plumbeous Vireo Vireo plumbeus | Brown-capped Vireo Vireo leucophrys | 1 | 1 | 0 |
| Warbling Vireo Vireo gilvus | Red-eyed Vireo Vireo olivaceus | 1 | 1 | 0 |
| Black-throated Jay Cyanolyca pumilo | Azure-hooded Jay Cyanolyca cucullata | 1 | 1 | 0 |
| Bushy-crested Jay Cyanocorax melanocyaneus | Yucatan Jay Cyanocorax yucatanicus | 1 | 0 | 1 |
| Bushy-crested Jay Cyanocorax melanocyaneus | Steller's Jay Cyanocitta stelleri | 1 | 0 | 1 |
| Yucatan Jay Cyanocorax yucatanicus | Unicoloured Jay Aphelocoma unicolor | 1 | 1 | 0 |
| Mangrove Swallow Tachycineta albilinea | Violet-green Swallow Tachycineta thalassina | 1 | 0 | 1 |
| Violet-green Swallow Tachycineta thalassina | Purple Martin Progne subis | 1 | 1 | 0 |
| Violet-green Swallow Tachycineta thalassina | Grey-breasted Martin Progne chalybea | 1 | 1 | 0 |
| Brown-chested Martin Progne tapera | Northern Rough-winged Swallow Stelgidopteryx serripennis | 1 | 0 | 1 |
| Cliff Swallow Petrochelidon pyrrhonota | Cave Swallow Petrochelidon fulva | 1 | 1 | 0 |
| Golden-crowned Kinglet Regulus satrapa | Wilson's Warbler Cardellina pusilla | 1 | 1 | 0 |
| Long-billed Gnatwren Ramphocaenus melanurus | White-browed Gnatcatcher Polioptila bilineata | 1 | 0 | 1 |
| White-browed Gnatcatcher Polioptila bilineata | White-lored Gnatcatcher Polioptila albiloris | 1 | 0 | 1 |
| Rock Wren Salpinctes obsoletus | Northern House Wren Troglodytes aedon | 1 | 0 | 1 |
| Rock Wren Salpinctes obsoletus | Rufous-browed Wren Troglodytes rufociliatus | 1 | 1 | 0 |
| Nightingale Wren Microcerculus philomela | Rufous-browed Wren Troglodytes rufociliatus | 1 | 0 | 1 |
| Nightingale Wren Microcerculus philomela | Grass Wren Cistothorus platensis | 1 | 1 | 0 |
| Northern House Wren Troglodytes aedon | Grass Wren Cistothorus platensis | 1 | 1 | 0 |
| Rufous-browed Wren Troglodytes rufociliatus | Rufous-naped Wren Campylorhynchus rufinucha | 1 | 1 | 0 |
| Band-backed Wren Campylorhynchus zonatus | Rufous-naped Wren Campylorhynchus rufinucha | 1 | 0 | 1 |
| Rufous-and-white Wren Thryophilus rufalbus | White-breasted Wood-Wren Henicorhina leucosticta | 1 | 0 | 1 |
| Cabanis's Wren Cantorchilus modestus | White-bellied Wren Uropsila leucogastra | 1 | 0 | 1 |
| Cabanis's Wren Cantorchilus modestus | Grey-breasted Wood-Wren Henicorhina leucophrys | 1 | 1 | 0 |
| White-bellied Wren Uropsila leucogastra | Grey-breasted Wood-Wren Henicorhina leucophrys | 1 | 1 | 0 |
| Brown-backed Solitaire Myadestes occidentalis | Ruddy-capped Nightingale-Thrush Catharus frantzii | 1 | 1 | 0 |
| Yellow-throated Nightingale-Thrush Catharus dryas | Veery Catharus fuscescens | 1 | 0 | 1 |
| Veery Catharus fuscescens | Swainson's Thrush Catharus ustulatus | 1 | 1 | 0 |
| Swainson's Thrush Catharus ustulatus | Wood Thrush Hylocichla mustelina | 1 | 0 | 1 |
| Mountain Thrush Turdus plebejus | Black Thrush Turdus infuscatus | 1 | 1 | 0 |
| Clay-coloured Thrush Turdus grayi | Great-tailed Grackle Quiscalus mexicanus | 1 | 1 | 0 |
| Blue-crowned Chlorophonia Chlorophonia occipitalis | Olive-backed Euphonia Euphonia gouldi | 1 | 1 | 0 |
| Scrub Euphonia Euphonia affinis | White-vented Euphonia Euphonia minuta | 1 | 1 | 0 |
| White-vented Euphonia Euphonia minuta | Yellow-throated Euphonia Euphonia hirundinacea | 1 | 1 | 0 |
| White-vented Euphonia Euphonia minuta | Hooded Grosbeak Hesperiphona abeillei | 1 | 1 | 0 |
| Pine Siskin Spinus pinus | Black-capped Siskin Spinus atriceps | 1 | 1 | 0 |
| Black-capped Siskin Spinus atriceps | Black-headed Siskin Spinus notatus | 1 | 1 | 0 |
| Botteri's Sparrow Peucaea botterii | Grasshopper Sparrow Ammodramus savannarum | 1 | 0 | 1 |
| Olive Sparrow Arremonops rufivirgatus | Green-backed Sparrow Arremonops chloronotus | 1 | 1 | 0 |
| White-faced Ground-Sparrow Melozone biarcuata | Rusty Sparrow Aimophila rufescens | 1 | 0 | 1 |
| Eastern Meadowlark Sturnella magna | Montezuma Oropendola Psarocolius montezuma | 1 | 1 | 0 |
| Yellow-winged Cacique Cassiculus melanicterus | Chestnut-headed Oropendola Psarocolius wagleri | 1 | 1 | 0 |
| Black-vented Oriole Icterus wagleri | Black-cowled Oriole Icterus prosthemelas | 1 | 1 | 0 |
| Bar-winged Oriole Icterus maculialatus | Hooded Oriole Icterus cucullatus | 1 | 1 | 0 |
| Black-cowled Oriole Icterus prosthemelas | Yellow-backed Oriole Icterus chrysater | 1 | 1 | 0 |
| Orchard Oriole Icterus spurius | Hooded Oriole Icterus cucullatus | 1 | 1 | 0 |
| Little Tinamou Crypturellus soui | Thicket Tinamou Crypturellus cinnamomeus | 1 | 0 | 1 |
| Red-winged Blackbird Agelaius phoeniceus | Bronzed Cowbird Molothrus aeneus | 1 | 0 | 1 |
| Bronzed Cowbird Molothrus aeneus | Giant Cowbird Molothrus oryzivorus | 1 | 1 | 0 |
| Melodious Blackbird Dives dives | Great-tailed Grackle Quiscalus mexicanus | 1 | 1 | 0 |
| Worm-eating Warbler Helmitheros vermivorum | Golden-winged Warbler Vermivora chrysoptera | 1 | 1 | 0 |
| Crescent-chested Warbler Oreothlypis superciliosa | Grey-crowned Yellowthroat Geothlypis poliocephala | 1 | 1 | 0 |
| Tennessee Warbler Leiothlypis peregrina | Orange-crowned Warbler Leiothlypis celata | 1 | 1 | 0 |
| Common Yellowthroat Geothlypis trichas | American Redstart Setophaga ruticilla | 1 | 0 | 1 |
| Northern Parula Setophaga americana | Tropical Parula Setophaga pitiayumi | 1 | 1 | 0 |
| Bay-breasted Warbler Setophaga castanea | Palm Warbler Setophaga palmarum | 1 | 1 | 0 |
| Blackburnian Warbler Setophaga fusca | Blackpoll Warbler Setophaga striata | 1 | 1 | 0 |
| Pine Warbler Setophaga pinus | Prairie Warbler Setophaga discolor | 1 | 1 | 0 |
| Yellow-rumped Warbler Setophaga coronata | Grace's Warbler Setophaga graciae | 1 | 1 | 0 |
| Hermit Warbler Setophaga occidentalis | Golden-cheeked Warbler Setophaga chrysoparia | 1 | 0 | 1 |
| Hermit Warbler Setophaga occidentalis | Black-throated Green Warbler Setophaga virens | 1 | 1 | 0 |
| Pink-headed Warbler Cardellina versicolor | Painted Redstart Myioborus pictus | 1 | 1 | 0 |
| Hepatic Tanager Piranga flava | Flame-coloured Tanager Piranga bidentata | 1 | 1 | 0 |
| Hepatic Tanager Piranga flava | White-winged Tanager Piranga leucoptera | 1 | 1 | 0 |
| Hepatic Tanager Piranga flava | Red-crowned Ant-Tanager Habia rubica | 1 | 1 | 0 |
| Western Tanager Piranga ludoviciana | White-winged Tanager Piranga leucoptera | 1 | 1 | 0 |
| Red-throated Ant-Tanager Driophlox fuscicauda | Yellow Grosbeak Pheucticus chrysopeplus | 1 | 1 | 0 |
| Blue-black Grosbeak Cyanoloxia cyanoides | Blue Grosbeak Passerina caerulea | 1 | 0 | 1 |
| Blue Bunting Cyanocompsa parellina | Varied Bunting Passerina versicolor | 1 | 0 | 1 |
| Blue Grosbeak Passerina caerulea | Indigo Bunting Passerina cyanea | 1 | 0 | 1 |
| Indigo Bunting Passerina cyanea | Varied Bunting Passerina versicolor | 1 | 0 | 1 |
| Varied Bunting Passerina versicolor | Painted Bunting Passerina ciris | 1 | 0 | 1 |
| Painted Bunting Passerina ciris | Dickcissel Spiza americana | 1 | 0 | 1 |
| Crimson-collared Tanager Ramphocelus sanguinolentus | Scarlet-rumped Tanager Ramphocelus passerinii | 1 | 1 | 0 |
| Scarlet-rumped Tanager Ramphocelus passerinii | Blue-grey Tanager Thraupis episcopus | 1 | 1 | 0 |
| Blue-grey Tanager Thraupis episcopus | Yellow-winged Tanager Thraupis abbas | 1 | 0 | 1 |
| Yellow-winged Tanager Thraupis abbas | Azure-rumped Tanager Poecilostreptus cabanisi | 1 | 1 | 0 |
| Golden-hooded Tanager Stilpnia larvata | Green Honeycreeper Chlorophanes spiza | 1 | 1 | 0 |
| Red-legged Honeycreeper Cyanerpes cyaneus | Cinnamon-bellied Flowerpiercer Diglossa baritula | 1 | 1 | 0 |
| Cinnamon-bellied Flowerpiercer Diglossa baritula | Ruddy-breasted Seedeater Sporophila minuta | 1 | 1 | 0 |
| Grassland Yellow-Finch Sicalis luteola | Ruddy-breasted Seedeater Sporophila minuta | 1 | 1 | 0 |
| Blue-black Grassquit Volatinia jacarina | Ruddy-breasted Seedeater Sporophila minuta | 1 | 1 | 0 |
| Variable Seedeater Sporophila corvina | Black-headed Saltator Saltator atriceps | 1 | 0 | 1 |
| Streak-backed Oriole Icterus pustulatus | Bullock's Oriole Icterus bullockii | 1 | 0 | 1 |
| Slaty-breasted Tinamou Crypturellus boucardi | Thicket Tinamou Crypturellus cinnamomeus | 1 | 1 | 0 |
| Cinnamon Teal Spatula cyanoptera | Eurasian/Green-winged Teal Anas crecca | 1 | 1 | 0 |
| Gadwall Mareca strepera | Eurasian/Green-winged Teal Anas crecca | 1 | 1 | 0 |
| Ring-necked Duck Aythya collaris | Greater Scaup Aythya marila | 1 | 1 | 0 |
| Greater Scaup Aythya marila | Lesser Scaup Aythya affinis | 1 | 0 | 1 |
| Plain Chachalaca Ortalis vetula | White-bellied Chachalaca Ortalis leucogastra | 1 | 1 | 0 |
| Plain Chachalaca Ortalis vetula | Highland Guan Penelopina nigra | 1 | 1 | 0 |
| Plain Chachalaca Ortalis vetula | Black-headed Saltator Saltator atriceps | 1 | 0 | 1 |
| Crested Guan Penelope purpurascens | Highland Guan Penelopina nigra | 1 | 1 | 0 |
| Highland Guan Penelopina nigra | Great Curassow Crax rubra | 1 | 1 | 0 |
| Highland Guan Penelopina nigra | Orange-billed Nightingale-Thrush Catharus aurantiirostris | 1 | 1 | 0 |
| Buffy-crowned Wood-Partridge Dendrortyx leucophrys | Black-throated Bobwhite Colinus nigrogularis | 1 | 0 | 1 |
| Buffy-crowned Wood-Partridge Dendrortyx leucophrys | Crested Bobwhite Colinus cristatus | 1 | 1 | 0 |
| Buffy-crowned Wood-Partridge Dendrortyx leucophrys | Singing Quail Dactylortyx thoracicus | 1 | 1 | 0 |
| Northern Bobwhite Colinus virginianus | Ocellated Quail Cyrtonyx ocellatus | 1 | 1 | 0 |
| Northern Bobwhite Colinus virginianus | Spotted Wood-Quail Odontophorus guttatus | 1 | 1 | 0 |
| Ocellated Quail Cyrtonyx ocellatus | Ocellated Turkey Meleagris ocellata | 1 | 0 | 1 |
| Pale-vented Pigeon Patagioenas cayennensis | Band-tailed Pigeon Patagioenas fasciata | 1 | 1 | 0 |
| Pale-vented Pigeon Patagioenas cayennensis | Short-billed Pigeon Patagioenas nigrirostris | 1 | 1 | 0 |
| Scaled Pigeon Patagioenas speciosa | Red-billed Pigeon Patagioenas flavirostris | 1 | 1 | 0 |
| Scaled Pigeon Patagioenas speciosa | Band-tailed Pigeon Patagioenas fasciata | 1 | 0 | 1 |
| Red-billed Pigeon Patagioenas flavirostris | Clay-coloured Thrush Turdus grayi | 1 | 1 | 0 |
| Band-tailed Pigeon Patagioenas fasciata | Short-billed Pigeon Patagioenas nigrirostris | 1 | 1 | 0 |
| Short-billed Pigeon Patagioenas nigrirostris | Common Ground Dove Columbina passerina | 1 | 1 | 0 |
| Short-billed Pigeon Patagioenas nigrirostris | Plain-breasted Ground Dove Columbina minuta | 1 | 1 | 0 |
| Plain-breasted Ground Dove Columbina minuta | Blue Ground Dove Claravis pretiosa | 1 | 1 | 0 |
| Blue Ground Dove Claravis pretiosa | Ruddy Quail-Dove Geotrygon montana | 1 | 0 | 1 |
| White-tipped Dove Leptotila verreauxi | Caribbean Dove Leptotila jamaicensis | 1 | 1 | 0 |
| Caribbean Dove Leptotila jamaicensis | Grey-headed Dove Leptotila plumbeiceps | 1 | 1 | 0 |
| Grey-chested Dove Leptotila cassinii | Grey-headed Dove Leptotila plumbeiceps | 1 | 0 | 1 |
| Groove-billed Ani Crotophaga sulcirostris | Black-headed Trogon Trogon melanocephalus | 1 | 1 | 0 |
| Groove-billed Ani Crotophaga sulcirostris | White-crowned Parrot Pionus senilis | 1 | 0 | 1 |
| Groove-billed Ani Crotophaga sulcirostris | Melodious Blackbird Dives dives | 1 | 0 | 1 |
| Striped Cuckoo Tapera naevia | Common Squirrel-Cuckoo Piaya cayana | 1 | 1 | 0 |
| Pheasant Cuckoo Dromococcyx phasianellus | Lesser Roadrunner Geococcyx velox | 1 | 0 | 1 |
| Lesser Ground-Cuckoo Morococcyx erythropygus | Common Squirrel-Cuckoo Piaya cayana | 1 | 0 | 1 |
| Common Squirrel-Cuckoo Piaya cayana | Morelet's Seedeater Sporophila morelleti | 1 | 0 | 1 |
| Lesser Nighthawk Chordeiles acutipennis | Common Nighthawk Chordeiles minor | 1 | 0 | 1 |
| Lesser Nighthawk Chordeiles acutipennis | Common Pauraque Nyctidromus albicollis | 1 | 1 | 0 |
| Common Nighthawk Chordeiles minor | Yucatan Poorwill Nyctiphrynus yucatanicus | 1 | 1 | 0 |
| Short-tailed Nighthawk Lurocalis semitorquatus | Common Pauraque Nyctidromus albicollis | 1 | 1 | 0 |
| Common Pauraque Nyctidromus albicollis | Spot-tailed Nightjar Antiurus maculicaudus | 1 | 1 | 0 |
| Common Pauraque Nyctidromus albicollis | Yucatan Poorwill Nyctiphrynus yucatanicus | 1 | 1 | 0 |
| Common Pauraque Nyctidromus albicollis | Chuck-will's-widow Antrostomus carolinensis | 1 | 0 | 1 |
| Spot-tailed Nightjar Antiurus maculicaudus | Chuck-will's-widow Antrostomus carolinensis | 1 | 1 | 0 |
| Yucatan Poorwill Nyctiphrynus yucatanicus | Yucatan Nightjar Antrostomus badius | 1 | 1 | 0 |
| Chuck-will's-widow Antrostomus carolinensis | Buff-collared Nightjar Antrostomus ridgwayi | 1 | 0 | 1 |
| Chuck-will's-widow Antrostomus carolinensis | Eastern Whip-poor-will Antrostomus vociferus | 1 | 0 | 1 |
| Yucatan Nightjar Antrostomus badius | Mexican Whip-poor-will Antrostomus arizonae | 1 | 1 | 0 |
| Buff-collared Nightjar Antrostomus ridgwayi | Mexican Whip-poor-will Antrostomus arizonae | 1 | 1 | 0 |
| Eastern Whip-poor-will Antrostomus vociferus | Mexican Whip-poor-will Antrostomus arizonae | 1 | 1 | 0 |
| Black Swift Cypseloides niger | White-chinned Swift Cypseloides cryptus | 1 | 0 | 1 |
| Black Swift Cypseloides niger | Chimney Swift Chaetura pelagica | 1 | 1 | 0 |
| White-fronted Swift Cypseloides storeri | White-chinned Swift Cypseloides cryptus | 1 | 0 | 1 |
| White-collared Swift Streptoprocne zonaris | Great Swallow-tailed Swift Panyptila sanctihieronymi | 1 | 0 | 1 |
| Chimney Swift Chaetura pelagica | Vaux's Swift Chaetura vauxi | 1 | 0 | 1 |
| Chimney Swift Chaetura pelagica | White-throated Swift Aeronautes saxatalis | 1 | 1 | 0 |
| Lesser Swallow-tailed Swift Panyptila cayennensis | Great Swallow-tailed Swift Panyptila sanctihieronymi | 1 | 1 | 0 |
| White-necked Jacobin Florisuga mellivora | Mexican Violetear Colibri thalassinus | 1 | 1 | 0 |
| Stripe-throated Hermit Phaethornis striigularis | Purple-crowned Fairy Heliothryx barroti | 1 | 0 | 1 |
| Stripe-throated Hermit Phaethornis striigularis | Green-breasted Mango Anthracothorax prevostii | 1 | 1 | 0 |
| Brown Violetear Colibri delphinae | Mexican Violetear Colibri thalassinus | 1 | 0 | 1 |
| Brown Violetear Colibri delphinae | Green-breasted Mango Anthracothorax prevostii | 1 | 1 | 0 |
| Green-breasted Mango Anthracothorax prevostii | Black-crested Coquette Lophornis helenae | 1 | 0 | 1 |
| Green-breasted Mango Anthracothorax prevostii | Long-billed Starthroat Heliomaster longirostris | 1 | 1 | 0 |
| Rivoli's Hummingbird Eugenes fulgens | Plain-capped Starthroat Heliomaster constantii | 1 | 0 | 1 |
| Long-billed Starthroat Heliomaster longirostris | Plain-capped Starthroat Heliomaster constantii | 1 | 0 | 1 |
| Plain-capped Starthroat Heliomaster constantii | Green-throated Mountain-gem Lampornis viridipallens | 1 | 1 | 0 |
| Green-throated Mountain-gem Lampornis viridipallens | Garnet-throated Hummingbird Lamprolaima rhami | 1 | 0 | 1 |
| Green-throated Mountain-gem Lampornis viridipallens | Broad-tailed Hummingbird Selasphorus platycercus | 1 | 1 | 0 |
| Ruby-throated Hummingbird Archilochus colubris | Wine-throated Hummingbird Selasphorus ellioti | 1 | 1 | 0 |
| Broad-tailed Hummingbird Selasphorus platycercus | Canivet's Emerald Cynanthus canivetii | 1 | 1 | 0 |
| Wine-throated Hummingbird Selasphorus ellioti | Canivet's Emerald Cynanthus canivetii | 1 | 1 | 0 |
| White-eared Hummingbird Basilinna leucotis | Rufous Sabrewing Pampa rufa | 1 | 0 | 1 |
| Wedge-tailed Sabrewing Pampa curvipennis | Violet Sabrewing Campylopterus hemileucurus | 1 | 0 | 1 |
| Rufous Sabrewing Pampa rufa | Crowned Woodnymph Thalurania colombica | 1 | 1 | 0 |
| Rufous Sabrewing Pampa rufa | Stripe-tailed Hummingbird Eupherusa eximia | 1 | 1 | 0 |
| Violet Sabrewing Campylopterus hemileucurus | Azure-crowned Hummingbird Saucerottia cyanocephala | 1 | 1 | 0 |
| Crowned Woodnymph Thalurania colombica | Stripe-tailed Hummingbird Eupherusa eximia | 1 | 0 | 1 |
| Stripe-tailed Hummingbird Eupherusa eximia | Rufous-tailed Hummingbird Amazilia tzacatl | 1 | 0 | 1 |
| Scaly-breasted Hummingbird Phaeochroa cuvierii | Azure-crowned Hummingbird Saucerottia cyanocephala | 1 | 0 | 1 |
| Azure-crowned Hummingbird Saucerottia cyanocephala | Cinnamon Hummingbird Amazilia rutila | 1 | 0 | 1 |
| Blue-tailed Hummingbird Saucerottia cyanura | Blue-throated Goldentail Chlorestes eliciae | 1 | 0 | 1 |
| Cinnamon Hummingbird Amazilia rutila | White-bellied Emerald Chlorestes candida | 1 | 1 | 0 |
| Buff-bellied Hummingbird Amazilia yucatanensis | Rufous-tailed Hummingbird Amazilia tzacatl | 1 | 1 | 0 |
| Clapper Rail Rallus crepitans | Rufous-necked Wood-Rail Aramides axillaris | 1 | 1 | 0 |
| Uniform Crake Amaurolimnas concolor | Rufous-necked Wood-Rail Aramides axillaris | 1 | 1 | 0 |
| Uniform Crake Amaurolimnas concolor | Russet-naped Wood-Rail Aramides albiventris | 1 | 1 | 0 |
| Rufous-necked Wood-Rail Aramides axillaris | Russet-naped Wood-Rail Aramides albiventris | 1 | 1 | 0 |
| American Moorhen Gallinula galeata | American Coot Fulica americana | 1 | 0 | 1 |
| Ruddy Crake Laterallus ruber | Grey-breasted Crake Laterallus exilis | 1 | 1 | 0 |
| American Golden Plover Pluvialis dominica | Wilson's Plover Anarhynchus wilsonia | 1 | 1 | 0 |
| Semipalmated Plover Charadrius semipalmatus | Collared Plover Anarhynchus collaris | 1 | 1 | 0 |
| Southern Lapwing Vanellus chilensis | Collared Plover Anarhynchus collaris | 1 | 0 | 1 |
| Hudsonian Godwit Limosa haemastica | Marbled Godwit Limosa fedoa | 1 | 0 | 1 |
| Hudsonian Godwit Limosa haemastica | Long-billed Dowitcher Limnodromus scolopaceus | 1 | 1 | 0 |
| Marbled Godwit Limosa fedoa | Short-billed Dowitcher Limnodromus griseus | 1 | 1 | 0 |
| Short-billed Dowitcher Limnodromus griseus | Long-billed Dowitcher Limnodromus scolopaceus | 1 | 1 | 0 |
| Grey Phalarope Phalaropus fulicarius | Red-necked Phalarope Phalaropus lobatus | 1 | 1 | 0 |
| Solitary Sandpiper Tringa solitaria | Wandering Tattler Tringa incana | 1 | 1 | 0 |
| Solitary Sandpiper Tringa solitaria | Lesser Yellowlegs Tringa flavipes | 1 | 1 | 0 |
| Lesser Yellowlegs Tringa flavipes | Greater Yellowlegs Tringa melanoleuca | 1 | 1 | 0 |
| Surfbird Calidris virgata | Ruff Calidris pugnax | 1 | 0 | 1 |
| Sanderling Calidris alba | Baird's Sandpiper Calidris bairdii | 1 | 1 | 0 |
| Baird's Sandpiper Calidris bairdii | Western Sandpiper Calidris mauri | 1 | 0 | 1 |
| White-rumped Sandpiper Calidris fuscicollis | Least Sandpiper Calidris minutilla | 1 | 0 | 1 |
| Western Sandpiper Calidris mauri | Semipalmated Sandpiper Calidris pusilla | 1 | 1 | 0 |
| Sabine's Gull Xema sabini | Grey Gull Leucophaeus modestus | 1 | 1 | 0 |
| Sabine's Gull Xema sabini | Bridled Tern Onychoprion anaethetus | 1 | 1 | 0 |
| Laughing Gull Leucophaeus atricilla | Franklin's Gull Leucophaeus pipixcan | 1 | 1 | 0 |
| Ring-billed Gull Larus delawarensis | Western Gull Larus occidentalis | 1 | 1 | 0 |
| Western Gull Larus occidentalis | Herring Gull Larus argentatus | 1 | 0 | 1 |
| Lesser Black-backed Gull Larus fuscus | California Gull Larus californicus | 1 | 0 | 1 |
| Lesser Black-backed Gull Larus fuscus | Black Skimmer Rynchops niger | 1 | 0 | 1 |
| Brown Noddy Anous stolidus | Sooty Tern Onychoprion fuscatus | 1 | 1 | 0 |
| Bridled Tern Onychoprion anaethetus | Least Tern Sternula antillarum | 1 | 0 | 1 |
| Bridled Tern Onychoprion anaethetus | Gull-billed Tern Gelochelidon nilotica | 1 | 1 | 0 |
| Arctic Tern Sterna paradisaea | Elegant Tern Thalasseus elegans | 1 | 1 | 0 |
| Common Tern Sterna hirundo | Royal Tern Thalasseus maximus | 1 | 0 | 1 |
| Royal Tern Thalasseus maximus | Red-billed Tropicbird Phaethon aethereus | 1 | 0 | 1 |
| Red-billed Tropicbird Phaethon aethereus | Wedge-rumped Storm-Petrel Hydrobates tethys | 1 | 1 | 0 |
| Leach's Storm-Petrel Hydrobates leucorhous | Black Storm-Petrel Hydrobates melania | 1 | 1 | 0 |
| Black Storm-Petrel Hydrobates melania | Wedge-tailed Shearwater Ardenna pacifica | 1 | 1 | 0 |
| Markham's Storm-Petrel Hydrobates markhami | Bulwer's Petrel Bulweria bulwerii | 1 | 1 | 0 |
| Pink-footed Shearwater Ardenna creatopus | Christmas Shearwater Puffinus nativitatis | 1 | 1 | 0 |
| Wedge-tailed Shearwater Ardenna pacifica | Black-vented Shearwater Puffinus opisthomelas | 1 | 0 | 1 |
| Sooty Shearwater Ardenna grisea | Black-vented Shearwater Puffinus opisthomelas | 1 | 1 | 0 |
| Christmas Shearwater Puffinus nativitatis | Galapagos Shearwater Puffinus subalaris | 1 | 0 | 1 |
| Magnificent Frigatebird Fregata magnificens | Brown Booby Sula leucogaster | 1 | 1 | 0 |
| Red-footed Booby Sula sula | Masked Booby Sula dactylatra | 1 | 1 | 0 |
| Double-crested Cormorant Nannopterum auritum | Neotropic Cormorant Nannopterum brasilianum | 1 | 1 | 0 |
| Bare-throated Tiger-Heron Tigrisoma mexicanum | Agami Heron Agamia agami | 1 | 0 | 1 |
| American Bittern Botaurus lentiginosus | Least Bittern Botaurus exilis | 1 | 0 | 1 |
| Pinnated Bittern Botaurus pinnatus | Least Bittern Botaurus exilis | 1 | 0 | 1 |
| Pinnated Bittern Botaurus pinnatus | Yellow-crowned Night Heron Nyctanassa violacea | 1 | 1 | 0 |
| Snowy Egret Egretta thula | Great White Egret Ardea alba | 1 | 1 | 0 |
| Glossy Ibis Plegadis falcinellus | White-faced Ibis Plegadis chihi | 1 | 0 | 1 |
| Turkey Vulture Cathartes aura | Lesser Yellow-headed Vulture Cathartes burrovianus | 1 | 0 | 1 |
| Hook-billed Kite Chondrohierax uncinatus | Grey-headed Kite Leptodon cayanensis | 1 | 0 | 1 |
| Hook-billed Kite Chondrohierax uncinatus | Crested Eagle Morphnus guianensis | 1 | 1 | 0 |
| Harpy Eagle Harpia harpyja | Ornate Hawk-Eagle Spizaetus ornatus | 1 | 0 | 1 |
| Black Hawk-Eagle Spizaetus tyrannus | Black-and-white Hawk-Eagle Spizaetus melanoleucus | 1 | 1 | 0 |
| Ornate Hawk-Eagle Spizaetus ornatus | Black-collared Hawk Busarellus nigricollis | 1 | 0 | 1 |
| Ornate Hawk-Eagle Spizaetus ornatus | Plumbeous Kite Ictinia plumbea | 1 | 1 | 0 |
| Black-collared Hawk Busarellus nigricollis | Snail Kite Rostrhamus sociabilis | 1 | 0 | 1 |
| Black-collared Hawk Busarellus nigricollis | Double-toothed Kite Harpagus bidentatus | 1 | 0 | 1 |
| Snail Kite Rostrhamus sociabilis | Double-toothed Kite Harpagus bidentatus | 1 | 0 | 1 |
| Sharp-shinned Hawk Accipiter striatus | Cooper's Hawk Astur cooperii | 1 | 1 | 0 |
| Cooper's Hawk Astur cooperii | Bicoloured Hawk Astur bicolor | 1 | 0 | 1 |
| Crane Hawk Geranospiza caerulescens | Great Black Hawk Buteogallus urubitinga | 1 | 0 | 1 |
| Common Black Hawk Buteogallus anthracinus | Great Black Hawk Buteogallus urubitinga | 1 | 0 | 1 |
| Common Black Hawk Buteogallus anthracinus | Roadside Hawk Rupornis magnirostris | 1 | 1 | 0 |
| Great Black Hawk Buteogallus urubitinga | Roadside Hawk Rupornis magnirostris | 1 | 0 | 1 |
| Great Black Hawk Buteogallus urubitinga | Harris's Hawk Parabuteo unicinctus | 1 | 1 | 0 |
| Roadside Hawk Rupornis magnirostris | Grey Hawk Buteo plagiatus | 1 | 1 | 0 |
| Harris's Hawk Parabuteo unicinctus | White-tailed Hawk Geranoaetus albicaudatus | 1 | 0 | 1 |
| Grey Hawk Buteo plagiatus | Swainson's Hawk Buteo swainsoni | 1 | 0 | 1 |
| Broad-winged Hawk Buteo platypterus | Short-tailed Hawk Buteo brachyurus | 1 | 1 | 0 |
| Broad-winged Hawk Buteo platypterus | Black-headed Saltator Saltator atriceps | 1 | 0 | 1 |
| Short-tailed Hawk Buteo brachyurus | Zone-tailed Hawk Buteo albonotatus | 1 | 1 | 0 |
| Swainson's Hawk Buteo swainsoni | Zone-tailed Hawk Buteo albonotatus | 1 | 1 | 0 |
| Flammulated Owl Psiloscops flammeolus | Whiskered Screech-Owl Megascops trichopsis | 1 | 0 | 1 |
| Flammulated Owl Psiloscops flammeolus | Middle American Screech-Owl Megascops guatemalae | 1 | 0 | 1 |
| Whiskered Screech-Owl Megascops trichopsis | Bearded Screech-Owl Megascops barbarus | 1 | 0 | 1 |
| Middle American Screech-Owl Megascops guatemalae | Pacific Screech-Owl Megascops cooperi | 1 | 0 | 1 |
| Northern Pygmy-Owl Glaucidium gnoma | Central American Pygmy-Owl Glaucidium griseiceps | 1 | 1 | 0 |
| Striped Owl Asio clamator | Stygian Owl Asio stygius | 1 | 1 | 0 |
| Striped Owl Asio clamator | Short-eared Owl Asio flammeus | 1 | 1 | 0 |
| Slaty-tailed Trogon Trogon massena | Gartered Violaceous Trogon Trogon caligatus | 1 | 1 | 0 |
| Slaty-tailed Trogon Trogon massena | Mountain Trogon Trogon mexicanus | 1 | 0 | 1 |
| Black-headed Trogon Trogon melanocephalus | Masked Tityra Tityra semifasciata | 1 | 1 | 0 |
| Gartered Violaceous Trogon Trogon caligatus | Collared Trogon Trogon collaris | 1 | 0 | 1 |
| Elegant Trogon Trogon elegans | Mountain Trogon Trogon mexicanus | 1 | 0 | 1 |
| Tody Motmot Hylomanes momotula | Russet-crowned Motmot Momotus mexicanus | 1 | 1 | 0 |
| Russet-crowned Motmot Momotus mexicanus | Broad-billed Motmot Electron platyrhynchum | 1 | 0 | 1 |
| Ringed Kingfisher Megaceryle torquata | Amazon Kingfisher Chloroceryle amazona | 1 | 0 | 1 |
| Amazon Kingfisher Chloroceryle amazona | American Pygmy Kingfisher Chloroceryle aenea | 1 | 0 | 1 |
| Northern Emerald-Toucanet Aulacorhynchus prasinus | Keel-billed Toucan Ramphastos sulfuratus | 1 | 1 | 0 |
| Collared Aracari Pteroglossus torquatus | Keel-billed Toucan Ramphastos sulfuratus | 1 | 0 | 1 |
| Olivaceous Piculet Picumnus olivaceus | Golden-fronted Woodpecker Melanerpes aurifrons | 1 | 1 | 0 |
| Smoky-brown Woodpecker Leuconotopicus fumigatus | Chestnut-coloured Woodpecker Celeus castaneus | 1 | 1 | 0 |
| Pale-billed Woodpecker Campephilus guatemalensis | Lineated Woodpecker Dryocopus lineatus | 1 | 0 | 1 |
| Laughing Falcon Herpetotheres cachinnans | Barred Forest-Falcon Micrastur ruficollis | 1 | 0 | 1 |
| Collared Forest-Falcon Micrastur semitorquatus | Bat Falcon Falco rufigularis | 1 | 0 | 1 |
| Aplomado Falcon Falco femoralis | Orange-breasted Falcon Falco deiroleucus | 1 | 0 | 1 |
| Bat Falcon Falco rufigularis | Orange-breasted Falcon Falco deiroleucus | 1 | 1 | 0 |
| Orange-breasted Falcon Falco deiroleucus | Peregrine Falcon Falco peregrinus | 1 | 0 | 1 |
| Brown-hooded Parrot Pyrilia haematotis | Yellow-naped Amazon Amazona auropalliata | 1 | 1 | 0 |
| White-crowned Parrot Pionus senilis | Red-lored Amazon Amazona autumnalis | 1 | 1 | 0 |
| Yellow-naped Amazon Amazona auropalliata | Mealy Amazon Amazona farinosa | 1 | 1 | 0 |
| White-fronted Amazon Amazona albifrons | Yellow-lored Amazon Amazona xantholora | 1 | 0 | 1 |
| Green Parakeet Psittacara holochlorus | Pacific Parakeet Psittacara strenuus | 1 | 1 | 0 |
| Great Antshrike Taraba major | Barred Antshrike Thamnophilus doliatus | 1 | 0 | 1 |
| Russet Antshrike Thamnistes anabatinus | Slaty Antwren Myrmotherula schisticolor | 1 | 0 | 1 |
| Plain Antvireo Dysithamnus mentalis | Slaty Antwren Myrmotherula schisticolor | 1 | 0 | 1 |
| Dot-winged Antwren Microrhopias quixensis | Dusky Antbird Cercomacroides tyrannina | 1 | 0 | 1 |
| Mayan Antthrush Formicarius moniliger | Middle American Leaftosser Sclerurus mexicanus | 1 | 1 | 0 |
| Middle American Leaftosser Sclerurus mexicanus | Tawny-winged Woodcreeper Dendrocincla anabatina | 1 | 1 | 0 |
| Scaly-throated Leaftosser Sclerurus guatemalensis | Ruddy Woodcreeper Dendrocincla homochroa | 1 | 1 | 0 |
| Olivaceous Woodcreeper Sittasomus griseicapillus | Tawny-winged Woodcreeper Dendrocincla anabatina | 1 | 1 | 0 |
| Ruddy Woodcreeper Dendrocincla homochroa | Tawny-winged Woodcreeper Dendrocincla anabatina | 1 | 0 | 1 |
| Tawny-winged Woodcreeper Dendrocincla anabatina | Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | 1 | 0 | 1 |
| Wedge-billed Woodcreeper Glyphorynchus spirurus | Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | 1 | 0 | 1 |
| Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | Strong-billed Woodcreeper Xiphocolaptes promeropirhynchus | 1 | 1 | 0 |
| Northern Barred-Woodcreeper Dendrocolaptes sanctithomae | Cocoa Woodcreeper Xiphorhynchus susurrans | 1 | 1 | 0 |