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 |
|---|---|---|---|---|
| Western Subalpine Warbler Curruca iberiae | Spectacled Warbler Curruca conspicillata | 3 | 2 | 1 |
| Cetti's Warbler Cettia cetti | Sardinian Warbler Curruca melanocephala | 2 | 0 | 2 |
| European Storm-Petrel Hydrobates pelagicus | Band-rumped Storm-Petrel Hydrobates castro | 2 | 0 | 2 |
| Red-legged Partridge Alectoris rufa | Eurasian Skylark Alauda arvensis | 2 | 0 | 2 |
| Eurasian Woodcock Scolopax rusticola | Common Snipe Gallinago gallinago | 2 | 2 | 0 |
| Grey-cheeked Thrush Catharus minimus | Swainson's Thrush Catharus ustulatus | 2 | 0 | 2 |
| European Serin Serinus serinus | Cirl Bunting Emberiza cirlus | 2 | 1 | 1 |
| Atlantic Canary Serinus canaria | Eurasian Siskin Spinus spinus | 2 | 1 | 1 |
| Western Subalpine Warbler Curruca iberiae | Dartford Warbler Curruca undata | 2 | 2 | 0 |
| Corn Bunting Emberiza calandra | Ortolan Bunting Emberiza hortulana | 2 | 0 | 2 |
| Common Kestrel Falco tinnunculus | American Kestrel Falco sparverius | 2 | 0 | 2 |
| King Eider Somateria spectabilis | Common Eider Somateria mollissima | 2 | 2 | 0 |
| Sand Martin Riparia riparia | Western House Martin Delichon urbicum | 2 | 2 | 0 |
| European Golden Plover Pluvialis apricaria | Black-headed Gull Chroicocephalus ridibundus | 2 | 1 | 1 |
| Fieldfare Turdus pilaris | Dusky Thrush Turdus eunomus | 2 | 1 | 1 |
| Spotted Flycatcher Muscicapa striata | European Pied Flycatcher Ficedula hypoleuca | 2 | 0 | 2 |
| Eurasian Skylark Alauda arvensis | Short-toed Treecreeper Certhia brachydactyla | 2 | 1 | 1 |
| Iberian Grey Shrike Lanius meridionalis | Woodchat Shrike Lanius senator | 2 | 2 | 0 |
| Western Orphean Warbler Curruca hortensis | Sardinian Warbler Curruca melanocephala | 2 | 2 | 0 |
| Collared Dove Streptopelia decaocto | Black-bellied Sandgrouse Pterocles orientalis | 1 | 1 | 0 |
| Collared Dove Streptopelia decaocto | Northern Lapwing Vanellus vanellus | 1 | 0 | 1 |
| Collared Dove Streptopelia decaocto | Eurasian Blackcap Sylvia atricapilla | 1 | 0 | 1 |
| Black-bellied Sandgrouse Pterocles orientalis | European Golden Plover Pluvialis apricaria | 1 | 1 | 0 |
| Great Spotted Cuckoo Clamator glandarius | Yellow-billed Cuckoo Coccyzus americanus | 1 | 0 | 1 |
| Yellow-billed Cuckoo Coccyzus americanus | Common Cuckoo Cuculus canorus | 1 | 1 | 0 |
| Common Nighthawk Chordeiles minor | Red-necked Nightjar Caprimulgus ruficollis | 1 | 0 | 1 |
| Common Nighthawk Chordeiles minor | Eurasian Nightjar Caprimulgus europaeus | 1 | 1 | 0 |
| Common Moorhen Gallinula chloropus | Western Swamphen Porphyrio porphyrio | 1 | 0 | 1 |
| Eurasian Coot Fulica atra | American Coot Fulica americana | 1 | 0 | 1 |
| American Coot Fulica americana | Allen's Gallinule Porphyrio alleni | 1 | 1 | 0 |
| Baillon's Crake Zapornia pusilla | Eurasian Bittern Botaurus stellaris | 1 | 0 | 1 |
| Demoiselle Crane Grus virgo | White-throated Dipper Cinclus cinclus | 1 | 0 | 1 |
| Common Crane Grus grus | Black-headed Gull Chroicocephalus ridibundus | 1 | 1 | 0 |
| Common Crane Grus grus | Great Spotted Woodpecker Dendrocopos major | 1 | 0 | 1 |
| European Golden Plover Pluvialis apricaria | American Golden Plover Pluvialis dominica | 1 | 0 | 1 |
| European Golden Plover Pluvialis apricaria | Zitting Cisticola Cisticola juncidis | 1 | 1 | 0 |
| European Golden Plover Pluvialis apricaria | Eurasian Wren Troglodytes troglodytes | 1 | 1 | 0 |
| Common Ringed Plover Charadrius hiaticula | Little Ringed Plover Thinornis dubius | 1 | 0 | 1 |
| Northern Lapwing Vanellus vanellus | Yellow-legged Gull Larus michahellis | 1 | 1 | 0 |
| Northern Lapwing Vanellus vanellus | Eurasian Jay Garrulus glandarius | 1 | 1 | 0 |
| Northern Lapwing Vanellus vanellus | Short-toed Treecreeper Certhia brachydactyla | 1 | 0 | 1 |
| Northern Lapwing Vanellus vanellus | Spotless Starling Sturnus unicolor | 1 | 0 | 1 |
| Kentish Plover Anarhynchus alexandrinus | Upland Sandpiper Bartramia longicauda | 1 | 0 | 1 |
| Bar-tailed Godwit Limosa lapponica | Black-tailed Godwit Limosa limosa | 1 | 1 | 0 |
| Black-tailed Godwit Limosa limosa | Short-billed Dowitcher Limnodromus griseus | 1 | 0 | 1 |
| Red-necked Phalarope Phalaropus lobatus | Terek Sandpiper Xenus cinereus | 1 | 0 | 1 |
| Common Sandpiper Actitis hypoleucos | Curlew Sandpiper Calidris ferruginea | 1 | 0 | 1 |
| Wood Sandpiper Tringa glareola | Lesser Yellowlegs Tringa flavipes | 1 | 1 | 0 |
| Red Knot Calidris canutus | Ruff Calidris pugnax | 1 | 0 | 1 |
| Red-necked Stint Calidris ruficollis | Little Stint Calidris minuta | 1 | 1 | 0 |
| Little Stint Calidris minuta | Least Sandpiper Calidris minutilla | 1 | 0 | 1 |
| Pectoral Sandpiper Calidris melanotos | Western Sandpiper Calidris mauri | 1 | 0 | 1 |
| Collared Pratincole Glareola pratincola | Caspian Tern Hydroprogne caspia | 1 | 1 | 0 |
| Long-tailed Skua Stercorarius longicaudus | Arctic Skua Stercorarius parasiticus | 1 | 1 | 0 |
| Long-tailed Skua Stercorarius longicaudus | Pomarine Skua Stercorarius pomarinus | 1 | 0 | 1 |
| Arctic Skua Stercorarius parasiticus | Little Auk Alle alle | 1 | 0 | 1 |
| Arctic Skua Stercorarius parasiticus | Mediterranean Gull Ichthyaetus melanocephalus | 1 | 1 | 0 |
| Pomarine Skua Stercorarius pomarinus | South Polar Skua Stercorarius maccormicki | 1 | 0 | 1 |
| Sabine's Gull Xema sabini | Bonaparte's Gull Chroicocephalus philadelphia | 1 | 1 | 0 |
| Slender-billed Gull Chroicocephalus genei | Bonaparte's Gull Chroicocephalus philadelphia | 1 | 0 | 1 |
| Black-headed Gull Chroicocephalus ridibundus | Yellow-legged Gull Larus michahellis | 1 | 0 | 1 |
| Black-headed Gull Chroicocephalus ridibundus | Iberian Magpie Cyanopica cooki | 1 | 0 | 1 |
| Black-headed Gull Chroicocephalus ridibundus | Eurasian Blue Tit Cyanistes caeruleus | 1 | 1 | 0 |
| Black-headed Gull Chroicocephalus ridibundus | Western House Martin Delichon urbicum | 1 | 0 | 1 |
| Audouin's Gull Ichthyaetus audouinii | Sandwich Tern Thalasseus sandvicensis | 1 | 0 | 1 |
| Herring Gull Larus argentatus | Great Black-backed Gull Larus marinus | 1 | 1 | 0 |
| Lesser Black-backed Gull Larus fuscus | Iceland Gull Larus glaucoides | 1 | 1 | 0 |
| Bridled Tern Onychoprion anaethetus | Gull-billed Tern Gelochelidon nilotica | 1 | 1 | 0 |
| Gull-billed Tern Gelochelidon nilotica | White-winged Black Tern Chlidonias leucopterus | 1 | 1 | 0 |
| Gull-billed Tern Gelochelidon nilotica | Eurasian Skylark Alauda arvensis | 1 | 1 | 0 |
| Gull-billed Tern Gelochelidon nilotica | Common Whitethroat Curruca communis | 1 | 0 | 1 |
| Whiskered Tern Chlidonias hybrida | Barolo Shearwater Puffinus baroli | 1 | 0 | 1 |
| Elegant Tern Thalasseus elegans | Lesser Crested Tern Thalasseus bengalensis | 1 | 1 | 0 |
| Lesser Crested Tern Thalasseus bengalensis | White-tailed Tropicbird Phaethon lepturus | 1 | 1 | 0 |
| Red-throated Diver Gavia stellata | Great Northern Diver Gavia immer | 1 | 0 | 1 |
| Wilson's Storm-Petrel Oceanites oceanicus | Black-bellied Storm-Petrel Fregetta tropica | 1 | 1 | 0 |
| Wilson's Storm-Petrel Oceanites oceanicus | European Storm-Petrel Hydrobates pelagicus | 1 | 1 | 0 |
| White-faced Storm-Petrel Pelagodroma marina | Band-rumped Storm-Petrel Hydrobates castro | 1 | 0 | 1 |
| European Storm-Petrel Hydrobates pelagicus | Leach's Storm-Petrel Hydrobates leucorhous | 1 | 1 | 0 |
| Band-rumped Storm-Petrel Hydrobates castro | Monteiro's Storm-Petrel Hydrobates monteiroi | 1 | 1 | 0 |
| Monteiro's Storm-Petrel Hydrobates monteiroi | European Roller Coracias garrulus | 1 | 0 | 1 |
| Bulwer's Petrel Bulweria bulwerii | Cape Verde Shearwater Calonectris edwardsii | 1 | 0 | 1 |
| Sooty Shearwater Ardenna grisea | Manx Shearwater Puffinus puffinus | 1 | 1 | 0 |
| Sooty Shearwater Ardenna grisea | Balearic Shearwater Puffinus mauretanicus | 1 | 0 | 1 |
| Manx Shearwater Puffinus puffinus | Yelkouan Shearwater Puffinus yelkouan | 1 | 1 | 0 |
| Manx Shearwater Puffinus puffinus | Balearic Shearwater Puffinus mauretanicus | 1 | 1 | 0 |
| White Stork Ciconia ciconia | Iberian Grey Shrike Lanius meridionalis | 1 | 1 | 0 |
| Northern Gannet Morus bassanus | Dartford Warbler Curruca undata | 1 | 0 | 1 |
| Great Cormorant Phalacrocorax carbo | Great Tit Parus major | 1 | 1 | 0 |
| European Shag Gulosus aristotelis | Double-crested Cormorant Nannopterum auritum | 1 | 0 | 1 |
| Snowy Egret Egretta thula | Little Egret Egretta garzetta | 1 | 1 | 0 |
| Snowy Egret Egretta thula | Western Reef-Heron Egretta gularis | 1 | 0 | 1 |
| Green Heron Butorides virescens | Squacco Heron Ardeola ralloides | 1 | 1 | 0 |
| Western Cattle-Egret Ardea ibis | European Bee-eater Merops apiaster | 1 | 1 | 0 |
| African Sacred Ibis Threskiornis aethiopicus | Eurasian Spoonbill Platalea leucorodia | 1 | 0 | 1 |
| European Honey-buzzard Pernis apivorus | Eurasian Goshawk Astur gentilis | 1 | 1 | 0 |
| Rüppell's Griffon Gyps rueppelli | Griffon Vulture Gyps fulvus | 1 | 1 | 0 |
| Steppe Eagle Aquila nipalensis | Spanish Eagle Aquila adalberti | 1 | 1 | 0 |
| Spanish Eagle Aquila adalberti | Western Marsh Harrier Circus aeruginosus | 1 | 0 | 1 |
| Hen Harrier Circus cyaneus | Eurasian Sparrowhawk Accipiter nisus | 1 | 1 | 0 |
| Common Buzzard Buteo buteo | Long-legged Buzzard Buteo rufinus | 1 | 0 | 1 |
| Long-legged Buzzard Buteo rufinus | Eurasian Scops Owl Otus scops | 1 | 0 | 1 |
| Long-legged Buzzard Buteo rufinus | Tawny Owl Strix aluco | 1 | 0 | 1 |
| American Barn Owl Tyto furcata | Snowy Owl Bubo scandiacus | 1 | 1 | 0 |
| Eurasian Scops Owl Otus scops | Tawny Owl Strix aluco | 1 | 1 | 0 |
| European Bee-eater Merops apiaster | Iberian Grey Shrike Lanius meridionalis | 1 | 0 | 1 |
| European Bee-eater Merops apiaster | Common Chaffinch Fringilla coelebs | 1 | 1 | 0 |
| Iberian Green Woodpecker Picus sharpei | Iberian Grey Shrike Lanius meridionalis | 1 | 0 | 1 |
| Iberian Green Woodpecker Picus sharpei | Spanish Sparrow Passer hispaniolensis | 1 | 0 | 1 |
| Lesser Kestrel Falco naumanni | Common Kestrel Falco tinnunculus | 1 | 1 | 0 |
| Lesser Kestrel Falco naumanni | Western Subalpine Warbler Curruca iberiae | 1 | 1 | 0 |
| Red-footed Falcon Falco vespertinus | Eurasian Hobby Falco subbuteo | 1 | 0 | 1 |
| Turkestan Shrike Lanius phoenicuroides | Isabelline Wheatear Oenanthe isabellina | 1 | 1 | 0 |
| Iberian Grey Shrike Lanius meridionalis | Iberian Magpie Cyanopica cooki | 1 | 1 | 0 |
| Iberian Grey Shrike Lanius meridionalis | Carrion Crow Corvus corone | 1 | 1 | 0 |
| Iberian Grey Shrike Lanius meridionalis | Crested Tit Lophophanes cristatus | 1 | 1 | 0 |
| Iberian Grey Shrike Lanius meridionalis | Meadow Pipit Anthus pratensis | 1 | 0 | 1 |
| Iberian Grey Shrike Lanius meridionalis | Common Chaffinch Fringilla coelebs | 1 | 1 | 0 |
| Iberian Grey Shrike Lanius meridionalis | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Lesser Grey Shrike Lanius minor | Woodchat Shrike Lanius senator | 1 | 1 | 0 |
| Woodchat Shrike Lanius senator | Madeira Firecrest Regulus madeirensis | 1 | 1 | 0 |
| Eurasian Jay Garrulus glandarius | Barn Swallow Hirundo rustica | 1 | 1 | 0 |
| Eurasian Jay Garrulus glandarius | Common Chiffchaff Phylloscopus collybita | 1 | 1 | 0 |
| Iberian Magpie Cyanopica cooki | House Sparrow Passer domesticus | 1 | 0 | 1 |
| Coal Tit Periparus ater | Great Tit Parus major | 1 | 1 | 0 |
| Crested Tit Lophophanes cristatus | Common Chaffinch Fringilla coelebs | 1 | 0 | 1 |
| Great Tit Parus major | Eurasian Blackbird Turdus merula | 1 | 1 | 0 |
| Greater Short-toed Lark Calandrella brachydactyla | Calandra Lark Melanocorypha calandra | 1 | 1 | 0 |
| Calandra Lark Melanocorypha calandra | Yellowhammer Emberiza citrinella | 1 | 0 | 1 |
| Mediterranean Short-toed Lark Alaudala rufescens | Eurasian Skylark Alauda arvensis | 1 | 1 | 0 |
| Woodlark Lullula arborea | Eurasian Skylark Alauda arvensis | 1 | 1 | 0 |
| Eurasian Skylark Alauda arvensis | Zitting Cisticola Cisticola juncidis | 1 | 0 | 1 |
| Eurasian Skylark Alauda arvensis | Sardinian Warbler Curruca melanocephala | 1 | 0 | 1 |
| Zitting Cisticola Cisticola juncidis | Barn Swallow Hirundo rustica | 1 | 0 | 1 |
| Zitting Cisticola Cisticola juncidis | Common Whitethroat Curruca communis | 1 | 0 | 1 |
| Zitting Cisticola Cisticola juncidis | European Stonechat Saxicola rubicola | 1 | 1 | 0 |
| Booted Warbler Iduna caligata | Western Olivaceous Warbler Iduna opaca | 1 | 1 | 0 |
| Paddyfield Warbler Acrocephalus agricola | Great Reed Warbler Acrocephalus arundinaceus | 1 | 0 | 1 |
| Savi's Warbler Locustella luscinioides | Western Bonelli's Warbler Phylloscopus bonelli | 1 | 1 | 0 |
| Barn Swallow Hirundo rustica | Western House Martin Delichon urbicum | 1 | 0 | 1 |
| Western House Martin Delichon urbicum | Cliff Swallow Petrochelidon pyrrhonota | 1 | 0 | 1 |
| Western House Martin Delichon urbicum | Eurasian Blackcap Sylvia atricapilla | 1 | 1 | 0 |
| Wood Warbler Phylloscopus sibilatrix | Hume's Warbler Phylloscopus humei | 1 | 1 | 0 |
| Western Bonelli's Warbler Phylloscopus bonelli | Yellow-browed Warbler Phylloscopus inornatus | 1 | 1 | 0 |
| Western Bonelli's Warbler Phylloscopus bonelli | Common Whitethroat Curruca communis | 1 | 0 | 1 |
| Western Bonelli's Warbler Phylloscopus bonelli | Ortolan Bunting Emberiza hortulana | 1 | 1 | 0 |
| Yellow-browed Warbler Phylloscopus inornatus | Pallas's Warbler Phylloscopus proregulus | 1 | 1 | 0 |
| Common Chiffchaff Phylloscopus collybita | Arctic Warbler Phylloscopus borealis | 1 | 0 | 1 |
| Common Chiffchaff Phylloscopus collybita | European Stonechat Saxicola rubicola | 1 | 0 | 1 |
| Common Chiffchaff Phylloscopus collybita | House Sparrow Passer domesticus | 1 | 1 | 0 |
| Common Chiffchaff Phylloscopus collybita | European Goldfinch Carduelis carduelis | 1 | 0 | 1 |
| Cetti's Warbler Cettia cetti | Eurasian Wren Troglodytes troglodytes | 1 | 1 | 0 |
| Cetti's Warbler Cettia cetti | European Stonechat Saxicola rubicola | 1 | 0 | 1 |
| Cetti's Warbler Cettia cetti | Spanish Sparrow Passer hispaniolensis | 1 | 0 | 1 |
| Cetti's Warbler Cettia cetti | Common Chaffinch Fringilla coelebs | 1 | 1 | 0 |
| Cetti's Warbler Cettia cetti | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Eurasian Blackcap Sylvia atricapilla | Sardinian Warbler Curruca melanocephala | 1 | 1 | 0 |
| Eurasian Blackcap Sylvia atricapilla | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Garden Warbler Sylvia borin | Lesser Whitethroat Curruca curruca | 1 | 1 | 0 |
| Western Orphean Warbler Curruca hortensis | Common Whitethroat Curruca communis | 1 | 1 | 0 |
| Sardinian Warbler Curruca melanocephala | Short-toed Treecreeper Certhia brachydactyla | 1 | 0 | 1 |
| Sardinian Warbler Curruca melanocephala | European Stonechat Saxicola rubicola | 1 | 1 | 0 |
| Sardinian Warbler Curruca melanocephala | Pied Wagtail/White Wagtail Motacilla alba | 1 | 0 | 1 |
| Sardinian Warbler Curruca melanocephala | European Serin Serinus serinus | 1 | 1 | 0 |
| Spectacled Warbler Curruca conspicillata | Dartford Warbler Curruca undata | 1 | 0 | 1 |
| Spectacled Warbler Curruca conspicillata | Tawny Pipit Anthus campestris | 1 | 1 | 0 |
| Dartford Warbler Curruca undata | Common Firecrest Regulus ignicapilla | 1 | 0 | 1 |
| Dartford Warbler Curruca undata | Meadow Pipit Anthus pratensis | 1 | 1 | 0 |
| Dartford Warbler Curruca undata | Common Chaffinch Fringilla coelebs | 1 | 0 | 1 |
| Dartford Warbler Curruca undata | Common Linnet Linaria cannabina | 1 | 1 | 0 |
| Madeira Firecrest Regulus madeirensis | Common Firecrest Regulus ignicapilla | 1 | 0 | 1 |
| Short-toed Treecreeper Certhia brachydactyla | Meadow Pipit Anthus pratensis | 1 | 0 | 1 |
| Short-toed Treecreeper Certhia brachydactyla | Common Chaffinch Fringilla coelebs | 1 | 1 | 0 |
| Short-toed Treecreeper Certhia brachydactyla | European Greenfinch Chloris chloris | 1 | 0 | 1 |
| Short-toed Treecreeper Certhia brachydactyla | European Goldfinch Carduelis carduelis | 1 | 1 | 0 |
| Eurasian Wren Troglodytes troglodytes | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Wood Thrush Hylocichla mustelina | Mistle Thrush Turdus viscivorus | 1 | 1 | 0 |
| Song Thrush Turdus philomelos | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Song Thrush Turdus philomelos | Cirl Bunting Emberiza cirlus | 1 | 0 | 1 |
| Eurasian Blackbird Turdus merula | Meadow Pipit Anthus pratensis | 1 | 1 | 0 |
| Eurasian Blackbird Turdus merula | European Greenfinch Chloris chloris | 1 | 1 | 0 |
| Spotted Flycatcher Muscicapa striata | Black Redstart Phoenicurus ochruros | 1 | 1 | 0 |
| Bluethroat Luscinia svecica | Red-breasted Flycatcher Ficedula parva | 1 | 0 | 1 |
| European Stonechat Saxicola rubicola | Meadow Pipit Anthus pratensis | 1 | 1 | 0 |
| European Stonechat Saxicola rubicola | European Goldfinch Carduelis carduelis | 1 | 1 | 0 |
| European Stonechat Saxicola rubicola | Cirl Bunting Emberiza cirlus | 1 | 1 | 0 |
| Northern Wheatear Oenanthe oenanthe | Western Black-eared Wheatear Oenanthe hispanica | 1 | 1 | 0 |
| Desert Wheatear Oenanthe deserti | Western Black-eared Wheatear Oenanthe hispanica | 1 | 0 | 1 |
| House Sparrow Passer domesticus | Common Linnet Linaria cannabina | 1 | 1 | 0 |
| Spanish Sparrow Passer hispaniolensis | Cirl Bunting Emberiza cirlus | 1 | 1 | 0 |
| Eurasian Tree Sparrow Passer montanus | Rock Sparrow Petronia petronia | 1 | 0 | 1 |
| Western Yellow Wagtail Motacilla flava | Water Pipit Anthus spinoletta | 1 | 0 | 1 |
| Pied Wagtail/White Wagtail Motacilla alba | Meadow Pipit Anthus pratensis | 1 | 1 | 0 |
| Blyth's Pipit Anthus godlewskii | Berthelot's Pipit Anthus berthelotii | 1 | 0 | 1 |
| Tawny Pipit Anthus campestris | Berthelot's Pipit Anthus berthelotii | 1 | 1 | 0 |
| Tawny Pipit Anthus campestris | Meadow Pipit Anthus pratensis | 1 | 0 | 1 |
| Meadow Pipit Anthus pratensis | Water Pipit Anthus spinoletta | 1 | 0 | 1 |
| Tree Pipit Anthus trivialis | Yellowhammer Emberiza citrinella | 1 | 1 | 0 |
| Rock Pipit Anthus petrosus | Buff-bellied Pipit Anthus rubescens | 1 | 0 | 1 |
| Common Chaffinch Fringilla coelebs | European Greenfinch Chloris chloris | 1 | 1 | 0 |
| Azores Chaffinch Fringilla moreletti | Madeira Chaffinch Fringilla maderensis | 1 | 1 | 0 |
| Madeira Chaffinch Fringilla maderensis | Brambling Fringilla montifringilla | 1 | 0 | 1 |
| Brambling Fringilla montifringilla | Common Rosefinch Carpodacus erythrinus | 1 | 0 | 1 |
| Common Rosefinch Carpodacus erythrinus | European Greenfinch Chloris chloris | 1 | 1 | 0 |
| Common Linnet Linaria cannabina | Corn Bunting Emberiza calandra | 1 | 1 | 0 |
| European Serin Serinus serinus | Atlantic Canary Serinus canaria | 1 | 0 | 1 |
| Atlantic Canary Serinus canaria | Yellowhammer Emberiza citrinella | 1 | 0 | 1 |
| Common Reed Bunting Emberiza schoeniclus | Little Bunting Emberiza pusilla | 1 | 0 | 1 |
| Little Bunting Emberiza pusilla | Rustic Bunting Emberiza rustica | 1 | 1 | 0 |
| Lincoln's Sparrow Melospiza lincolnii | Bobolink Dolichonyx oryzivorus | 1 | 1 | 0 |
| Ovenbird Seiurus aurocapilla | Blue-winged Warbler Vermivora cyanoptera | 1 | 1 | 0 |
| Tennessee Warbler Leiothlypis peregrina | Mourning Warbler Geothlypis philadelphia | 1 | 0 | 1 |
| Connecticut Warbler Oporornis agilis | Mourning Warbler Geothlypis philadelphia | 1 | 1 | 0 |
| Rose-breasted Grosbeak Pheucticus ludovicianus | Indigo Bunting Passerina cyanea | 1 | 0 | 1 |
| Snow Goose Anser caerulescens | Greylag Goose Anser anser | 1 | 1 | 0 |
| Blue Grosbeak Passerina caerulea | Indigo Bunting Passerina cyanea | 1 | 0 | 1 |
| Greylag Goose Anser anser | Greater White-fronted Goose Anser albifrons | 1 | 0 | 1 |
| Greylag Goose Anser anser | Canada Goose Branta canadensis | 1 | 1 | 0 |
| Taiga Bean Goose Anser fabalis | Tundra Bean Goose Anser serrirostris | 1 | 1 | 0 |
| Northern Shoveler Spatula clypeata | Common Linnet Linaria cannabina | 1 | 1 | 0 |
| Gadwall Mareca strepera | Goosander Mergus merganser | 1 | 1 | 0 |
| Gadwall Mareca strepera | Great Skua Stercorarius skua | 1 | 0 | 1 |
| Eurasian Wigeon Mareca penelope | American Wigeon Mareca americana | 1 | 0 | 1 |
| Mallard Anas platyrhynchos | Iberian Green Woodpecker Picus sharpei | 1 | 1 | 0 |
| Common Pochard Aythya ferina | Ferruginous Duck Aythya nyroca | 1 | 0 | 1 |
| Greater Scaup Aythya marila | Common Scoter Melanitta nigra | 1 | 0 | 1 |
| Common Eider Somateria mollissima | Surf Scoter Melanitta perspicillata | 1 | 0 | 1 |
| Common Eider Somateria mollissima | Velvet Scoter Melanitta fusca | 1 | 0 | 1 |
| Long-tailed Duck Clangula hyemalis | Common Goldeneye Bucephala clangula | 1 | 1 | 0 |
| Bufflehead Bucephala albeola | Smew Mergellus albellus | 1 | 0 | 1 |
| Ruddy Duck Oxyura jamaicensis | White-headed Duck Oxyura leucocephala | 1 | 1 | 0 |
| Red-legged Partridge Alectoris rufa | Dartford Warbler Curruca undata | 1 | 1 | 0 |
| Rock Dove Columba livia | Trocaz Pigeon Columba trocaz | 1 | 0 | 1 |
| Stock Dove Columba oenas | European Turtle Dove Streptopelia turtur | 1 | 1 | 0 |