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 |
|---|---|---|---|---|
| Common Buzzard Buteo buteo | Eastern Buzzard Buteo japonicus | 5 | 3 | 2 |
| Ashy Minivet Pericrocotus divaricatus | Brown-rumped Minivet Pericrocotus cantonensis | 5 | 1 | 4 |
| Hill Blue Flycatcher Cyornis whitei | Indochinese Blue Flycatcher Cyornis sumatrensis | 4 | 3 | 1 |
| White-rumped Vulture Gyps bengalensis | Slender-billed Vulture Gyps tenuirostris | 4 | 1 | 3 |
| Indian Cuckoo Cuculus micropterus | Himalayan Cuckoo Cuculus saturatus | 3 | 2 | 1 |
| Shikra Tachyspiza badia | Chinese Sparrowhawk Tachyspiza soloensis | 3 | 2 | 1 |
| Eastern Marsh Harrier Circus spilonotus | Pied Harrier Circus melanoleucos | 3 | 0 | 3 |
| Grey-faced Buzzard Butastur indicus | Crested Goshawk Lophospiza trivirgata | 3 | 3 | 0 |
| Spotted Wood-Owl Strix seloputo | Brown Wood-Owl Strix leptogrammica | 2 | 1 | 1 |
| Blue Pitta Hydrornis cyaneus | Blue-winged Pitta Pitta moluccensis | 2 | 1 | 1 |
| Germain's Swiftlet Aerodramus germani | Asian Palm Swift Cypsiurus balasiensis | 2 | 0 | 2 |
| Asian Fairy-bluebird Irena puella | Blue-winged Leafbird Chloropsis moluccensis | 2 | 1 | 1 |
| Grey Peacock-Pheasant Polyplectron bicalcaratum | Red Junglefowl Gallus gallus | 2 | 2 | 0 |
| Richard's Pipit Anthus richardi | Paddyfield Pipit Anthus rufulus | 2 | 0 | 2 |
| Lesser Fish-Eagle Icthyophaga humilis | Grey-headed Fish-Eagle Icthyophaga ichthyaetus | 2 | 2 | 0 |
| Chestnut-headed Partridge Arborophila cambodiana | Bar-backed Partridge Arborophila brunneopectus | 2 | 2 | 0 |
| Australasian Grass-Owl Tyto longimembris | American Barn Owl Tyto furcata | 2 | 0 | 2 |
| Whimbrel Numenius phaeopus | Eurasian Curlew Numenius arquata | 2 | 1 | 1 |
| Black-and-buff Woodpecker Meiglyptes jugularis | Pale-headed Woodpecker Gecinulus grantia | 2 | 1 | 1 |
| Pin-tailed Snipe Gallinago stenura | Common Snipe Gallinago gallinago | 2 | 1 | 1 |
| Cinnamon Bittern Botaurus cinnamomeus | Yellow Bittern Botaurus sinensis | 2 | 1 | 1 |
| Tiger Shrike Lanius tigrinus | Burmese Shrike Lanius collurioides | 2 | 1 | 1 |
| Eastern Crowned Warbler Phylloscopus coronatus | Alström's Warbler Phylloscopus soror | 2 | 1 | 1 |
| Arctic Skua Stercorarius parasiticus | Pomarine Skua Stercorarius pomarinus | 1 | 1 | 0 |
| Black-headed Gull Chroicocephalus ridibundus | Brown-headed Gull Chroicocephalus brunnicephalus | 1 | 0 | 1 |
| Bridled Tern Onychoprion anaethetus | Caspian Tern Hydroprogne caspia | 1 | 0 | 1 |
| Caspian Tern Hydroprogne caspia | Common Tern Sterna hirundo | 1 | 0 | 1 |
| Whiskered Tern Chlidonias hybrida | Common Tern Sterna hirundo | 1 | 0 | 1 |
| Common Tern Sterna hirundo | Great Crested Tern Thalasseus bergii | 1 | 0 | 1 |
| Milky Stork Mycteria cinerea | Painted Stork Mycteria leucocephala | 1 | 1 | 0 |
| Lesser Frigatebird Fregata ariel | Christmas Island Frigatebird Fregata andrewsi | 1 | 0 | 1 |
| Christmas Island Frigatebird Fregata andrewsi | Great Cormorant Phalacrocorax carbo | 1 | 1 | 0 |
| White-shouldered Ibis Pseudibis davisoni | Giant Ibis Pseudibis gigantea | 1 | 1 | 0 |
| Crested Honey-buzzard Pernis ptilorhynchus | Jerdon's Baza Aviceda jerdoni | 1 | 0 | 1 |
| Red-headed Vulture Sarcogyps calvus | Slender-billed Vulture Gyps tenuirostris | 1 | 0 | 1 |
| White-rumped Vulture Gyps bengalensis | Himalayan Griffon Gyps himalayensis | 1 | 1 | 0 |
| White-rumped Vulture Gyps bengalensis | Shikra Tachyspiza badia | 1 | 0 | 1 |
| Rufous-winged Buzzard Butastur liventer | Grey-faced Buzzard Butastur indicus | 1 | 0 | 1 |
| Rufous-winged Buzzard Butastur liventer | Eastern Marsh Harrier Circus spilonotus | 1 | 0 | 1 |
| Crested Goshawk Lophospiza trivirgata | Shikra Tachyspiza badia | 1 | 1 | 0 |
| Chinese Sparrowhawk Tachyspiza soloensis | Black Kite Milvus migrans | 1 | 1 | 0 |
| Brahminy Kite Haliastur indus | Grey-headed Fish-Eagle Icthyophaga ichthyaetus | 1 | 0 | 1 |
| Brahminy Kite Haliastur indus | Eastern Buzzard Buteo japonicus | 1 | 0 | 1 |
| White-bellied Sea-Eagle Icthyophaga leucogaster | Lesser Fish-Eagle Icthyophaga humilis | 1 | 0 | 1 |
| Collared Scops Owl Otus lettia | Brown Wood-Owl Strix leptogrammica | 1 | 1 | 0 |
| Oriental Scops Owl Otus sunia | Brown Fish-Owl Ketupa zeylonensis | 1 | 1 | 0 |
| Asian Barred Owlet Glaucidium cuculoides | Spotted Owlet Athene brama | 1 | 0 | 1 |
| Collared Owlet Taenioptynx brodiei | Spotted Owlet Athene brama | 1 | 1 | 0 |
| Brown Wood-Owl Strix leptogrammica | Brown Boobook Ninox scutulata | 1 | 0 | 1 |
| Great Hornbill Buceros bicornis | Oriental Pied-Hornbill Anthracoceros albirostris | 1 | 0 | 1 |
| Brown Hornbill Anorrhinus austeni | Oriental Pied-Hornbill Anthracoceros albirostris | 1 | 0 | 1 |
| Common Kingfisher Alcedo atthis | Blue-eared Kingfisher Alcedo meninting | 1 | 0 | 1 |
| Blue-eared Kingfisher Alcedo meninting | Banded Kingfisher Lacedo pulchella | 1 | 0 | 1 |
| White-throated Kingfisher Halcyon smyrnensis | Black-capped Kingfisher Halcyon pileata | 1 | 0 | 1 |
| Blue-eared Barbet Psilopogon cyanotis | Moustached Barbet Psilopogon incognitus | 1 | 1 | 0 |
| Blue-eared Barbet Psilopogon cyanotis | Indochinese Barbet Psilopogon annamensis | 1 | 0 | 1 |
| Red-vented Barbet Psilopogon lagrandieri | Lineated Barbet Psilopogon lineatus | 1 | 1 | 0 |
| Moustached Barbet Psilopogon incognitus | Indochinese Barbet Psilopogon annamensis | 1 | 1 | 0 |
| Grey-capped Pygmy Woodpecker Yungipicus canicapillus | Freckle-breasted Woodpecker Dendrocopos analis | 1 | 0 | 1 |
| Black-headed Woodpecker Picus erythropygius | Greater Yellownape Chrysophlegma flavinucha | 1 | 0 | 1 |
| Collared Falconet Microhierax caerulescens | Oriental Hobby Falco severus | 1 | 0 | 1 |
| Blossom-headed Parakeet Psittacula roseata | Vernal Hanging-Parrot Loriculus vernalis | 1 | 0 | 1 |
| Blue Pitta Hydrornis cyaneus | Bar-bellied Pitta Hydrornis elliotii | 1 | 1 | 0 |
| Small Minivet Pericrocotus cinnamomeus | Ashy Minivet Pericrocotus divaricatus | 1 | 1 | 0 |
| Black-winged Cuckooshrike Lalage melaschistos | Indochinese Cuckooshrike Lalage polioptera | 1 | 1 | 0 |
| Indochinese Cuckooshrike Lalage polioptera | White-browed Shrike-Babbler Pteruthius aeralatus | 1 | 0 | 1 |
| Clicking Shrike-Babbler Pteruthius intermedius | Mangrove Whistler Pachycephala cinerea | 1 | 0 | 1 |
| Ashy Woodswallow Artamus fuscus | Common Woodshrike Tephrodornis pondicerianus | 1 | 1 | 0 |
| Ashy Woodswallow Artamus fuscus | Siberian House Martin Delichon lagopodum | 1 | 1 | 0 |
| Malaysian Pied-Fantail Rhipidura javanica | White-throated Fantail Rhipidura albicollis | 1 | 0 | 1 |
| White-throated Fantail Rhipidura albicollis | White-browed Fantail Rhipidura aureola | 1 | 1 | 0 |
| Black Drongo Dicrurus macrocercus | Crow-billed Drongo Dicrurus annectens | 1 | 0 | 1 |
| Black Drongo Dicrurus macrocercus | Scaly-breasted Munia Lonchura punctulata | 1 | 1 | 0 |
| Bronzed Drongo Dicrurus aeneus | Hair-crested Drongo Dicrurus hottentottus | 1 | 1 | 0 |
| Bronzed Drongo Dicrurus aeneus | Greater Racket-tailed Drongo Dicrurus paradiseus | 1 | 0 | 1 |
| Black Paradise-Flycatcher Terpsiphone atrocaudata | Blyth's Paradise-Flycatcher Terpsiphone affinis | 1 | 1 | 0 |
| Tiger Shrike Lanius tigrinus | Brown Shrike Lanius cristatus | 1 | 0 | 1 |
| Singing Bushlark Mirafra javanica | Indochinese Bushlark Plocealauda erythrocephala | 1 | 1 | 0 |
| Cambodian Tailorbird Orthotomus chaktomuk | Ashy Tailorbird Orthotomus ruficeps | 1 | 0 | 1 |
| Brown Prinia Prinia polychroa | Rufescent Prinia Prinia rufescens | 1 | 1 | 0 |
| Hill Prinia Prinia superciliaris | Rufescent Prinia Prinia rufescens | 1 | 0 | 1 |
| Rufescent Prinia Prinia rufescens | Grey-breasted Prinia Prinia hodgsonii | 1 | 1 | 0 |
| Rufescent Prinia Prinia rufescens | Plain Prinia Prinia inornata | 1 | 0 | 1 |
| Grey-breasted Prinia Prinia hodgsonii | Plain Prinia Prinia inornata | 1 | 1 | 0 |
| Plain Prinia Prinia inornata | Zitting Cisticola Cisticola juncidis | 1 | 1 | 0 |
| Thick-billed Warbler Arundinax aedon | Oriental Reed Warbler Acrocephalus orientalis | 1 | 1 | 0 |
| Lanceolated Warbler Locustella lanceolata | Pygmy Cupwing Pnoepyga pusilla | 1 | 1 | 0 |
| Grey-throated Martin Riparia chinensis | Pale Martin Riparia diluta | 1 | 0 | 1 |
| Pacific Swallow Hirundo javanica | Wire-tailed Swallow Hirundo smithii | 1 | 1 | 0 |
| Wire-tailed Swallow Hirundo smithii | Red-rumped Swallow Cecropis daurica | 1 | 0 | 1 |
| Siberian House Martin Delichon lagopodum | Asian House Martin Delichon dasypus | 1 | 1 | 0 |
| Ochraceous Bulbul Alophoixus ochraceus | Grey-eyed Bulbul Iole propinqua | 1 | 0 | 1 |
| Grey-eyed Bulbul Iole propinqua | Mountain Bulbul Ixos mcclellandii | 1 | 0 | 1 |
| Yellow-vented Bulbul Pycnonotus goiavier | Sooty-headed Bulbul Pycnonotus aurigaster | 1 | 0 | 1 |
| Yellow-vented Bulbul Pycnonotus goiavier | Pin-striped Tit-Babbler Mixornis gularis | 1 | 0 | 1 |
| Radde's Warbler Phylloscopus schwarzi | Dusky Warbler Phylloscopus fuscatus | 1 | 1 | 0 |
| Arctic Warbler Phylloscopus borealis | Kamchatka Leaf Warbler Phylloscopus examinandus | 1 | 0 | 1 |
| Kamchatka Leaf Warbler Phylloscopus examinandus | Blyth's Leaf Warbler Phylloscopus reguloides | 1 | 1 | 0 |
| Sulphur-breasted Warbler Phylloscopus ricketti | Claudia's Leaf Warbler Phylloscopus claudiae | 1 | 1 | 0 |
| Sulphur-breasted Warbler Phylloscopus ricketti | Davison's Leaf Warbler Phylloscopus intensior | 1 | 1 | 0 |
| Blyth's Leaf Warbler Phylloscopus reguloides | Claudia's Leaf Warbler Phylloscopus claudiae | 1 | 0 | 1 |
| Blyth's Leaf Warbler Phylloscopus reguloides | Davison's Leaf Warbler Phylloscopus intensior | 1 | 1 | 0 |
| Blyth's Leaf Warbler Phylloscopus reguloides | Kloss's Leaf Warbler Phylloscopus ogilviegranti | 1 | 1 | 0 |
| Claudia's Leaf Warbler Phylloscopus claudiae | Davison's Leaf Warbler Phylloscopus intensior | 1 | 1 | 0 |
| Black-throated Tit Aegithalos concinnus | Black-chinned Yuhina Yuhina nigrimenta | 1 | 1 | 0 |
| Chestnut-flanked White-eye Zosterops erythropleurus | Hume's White-eye Zosterops auriventer | 1 | 1 | 0 |
| Swinhoe's White-eye Zosterops simplex | Hume's White-eye Zosterops auriventer | 1 | 0 | 1 |
| Chestnut-capped Babbler Timalia pileata | White-browed Scimitar-Babbler Pomatorhinus schisticeps | 1 | 1 | 0 |
| Grey-faced Tit-Babbler Mixornis kelleyi | Pin-striped Tit-Babbler Mixornis gularis | 1 | 1 | 0 |
| Red-billed Scimitar-Babbler Pomatorhinus ochraceiceps | White-browed Scimitar-Babbler Pomatorhinus schisticeps | 1 | 1 | 0 |
| Puff-throated Babbler Pellorneum ruficeps | Abbott's Babbler Malacocincla abbotti | 1 | 1 | 0 |
| Abbott's Babbler Malacocincla abbotti | Streaked Wren-Babbler Gypsophila brevicaudata | 1 | 0 | 1 |
| Black-browed Fulvetta Alcippe grotei | Mountain Fulvetta Alcippe peracensis | 1 | 0 | 1 |
| Mountain Fulvetta Alcippe peracensis | Blue-winged Minla Actinodura cyanouroptera | 1 | 0 | 1 |
| Cambodian Laughingthrush Garrulax ferrarius | White-cheeked Laughingthrush Pterorhinus vassali | 1 | 0 | 1 |
| White-cheeked Laughingthrush Pterorhinus vassali | Black-throated Laughingthrush Pterorhinus chinensis | 1 | 0 | 1 |
| Velvet-fronted Nuthatch Sitta frontalis | Burmese Nuthatch Sitta neglecta | 1 | 0 | 1 |
| Daurian Starling Agropsar sturninus | White-shouldered Starling Sturnia sinensis | 1 | 1 | 0 |
| Black-collared Starling Gracupica nigricollis | Siamese Pied Starling Gracupica floweri | 1 | 0 | 1 |
| Chestnut-tailed Starling Sturnia malabarica | Vinous-breasted Myna Acridotheres leucocephalus | 1 | 1 | 0 |
| Red-billed Starling Spodiopsar sericeus | Great Myna Acridotheres grandis | 1 | 1 | 0 |
| Common Myna Acridotheres tristis | Vinous-breasted Myna Acridotheres leucocephalus | 1 | 0 | 1 |
| Dark-sided Thrush Zoothera marginata | Scaly Thrush Zoothera dauma | 1 | 1 | 0 |
| White's Thrush Zoothera aurea | Scaly Thrush Zoothera dauma | 1 | 1 | 0 |
| Dark-sided Flycatcher Muscicapa sibirica | Asian Brown Flycatcher Muscicapa dauurica | 1 | 1 | 0 |
| Dark-sided Flycatcher Muscicapa sibirica | Brown-streaked Flycatcher Muscicapa williamsoni | 1 | 1 | 0 |
| Asian Brown Flycatcher Muscicapa dauurica | Little Pied Flycatcher Ficedula westermanni | 1 | 0 | 1 |
| Brown-streaked Flycatcher Muscicapa williamsoni | Oriental Magpie-Robin Copsychus saularis | 1 | 0 | 1 |
| Large Niltava Niltava grandis | Fujian Niltava Niltava davidi | 1 | 0 | 1 |
| Verditer Flycatcher Eumyias thalassinus | Pale Blue Flycatcher Cyornis unicolor | 1 | 1 | 0 |
| Hainan Blue Flycatcher Cyornis hainanus | Pale Blue Flycatcher Cyornis unicolor | 1 | 1 | 0 |
| Pale Blue Flycatcher Cyornis unicolor | Hill Blue Flycatcher Cyornis whitei | 1 | 1 | 0 |
| Siberian Blue Robin Larvivora cyane | Blue Whistling-Thrush Myophonus caeruleus | 1 | 0 | 1 |
| Blue Whistling-Thrush Myophonus caeruleus | Siberian Rubythroat Calliope calliope | 1 | 0 | 1 |
| Yellow-rumped Flycatcher Ficedula zanthopygia | Slaty-backed Flycatcher Ficedula erithacus | 1 | 0 | 1 |
| Amur Stonechat Saxicola stejnegeri | Pied Bushchat Saxicola caprata | 1 | 0 | 1 |
| Pied Bushchat Saxicola caprata | Grey Bushchat Saxicola ferreus | 1 | 1 | 0 |
| Ruby-cheeked Sunbird Chalcoparia singalensis | Ornate Sunbird Cinnyris ornatus | 1 | 1 | 0 |
| Brown-throated Sunbird Anthreptes malacensis | Van Hasselt's Sunbird Leptocoma brasiliana | 1 | 0 | 1 |
| Brown-throated Sunbird Anthreptes malacensis | Purple Sunbird Cinnyris asiaticus | 1 | 1 | 0 |
| Purple Sunbird Cinnyris asiaticus | Black-throated Sunbird Aethopyga saturata | 1 | 1 | 0 |
| Ornate Sunbird Cinnyris ornatus | Black-throated Sunbird Aethopyga saturata | 1 | 1 | 0 |
| Black-throated Sunbird Aethopyga saturata | Crimson Sunbird Aethopyga siparaja | 1 | 1 | 0 |
| Crimson Sunbird Aethopyga siparaja | Streaked Spiderhunter Arachnothera magna | 1 | 1 | 0 |
| Streaked Weaver Ploceus manyar | Baya Weaver Ploceus philippinus | 1 | 1 | 0 |
| Baya Weaver Ploceus philippinus | Asian Golden Weaver Ploceus hypoxanthus | 1 | 1 | 0 |
| Lesser Whistling-Duck Dendrocygna javanica | Knob-billed Duck Sarkidiornis melanotos | 1 | 1 | 0 |
| Richard's Pipit Anthus richardi | Red-throated Pipit Anthus cervinus | 1 | 1 | 0 |
| Lesser Whistling-Duck Dendrocygna javanica | Indian Spot-billed Duck Anas poecilorhyncha | 1 | 1 | 0 |
| Blue-breasted Quail Synoicus chinensis | Rain Quail Coturnix coromandelica | 1 | 0 | 1 |
| Pale-capped Pigeon Columba punicea | Red Collared Dove Streptopelia tranquebarica | 1 | 0 | 1 |
| Barred Cuckoo-Dove Macropygia unchall | Large Scimitar-Babbler Erythrogenys hypoleucos | 1 | 0 | 1 |
| Ashy-headed Green-Pigeon Treron phayrei | Yellow-vented Green-Pigeon Treron seimundi | 1 | 1 | 0 |
| Yellow-vented Green-Pigeon Treron seimundi | Pin-tailed Green-Pigeon Treron apicauda | 1 | 1 | 0 |
| Large-tailed Nightjar Caprimulgus macrurus | Savanna Nightjar Caprimulgus affinis | 1 | 0 | 1 |
| Silver-backed Needletail Hirundapus cochinchinensis | Brown-backed Needletail Hirundapus giganteus | 1 | 0 | 1 |
| Germain's Swiftlet Aerodramus germani | Pacific Swift Apus pacificus | 1 | 1 | 0 |
| Pacific Swift Apus pacificus | Cook's Swift Apus cooki | 1 | 1 | 0 |
| White-browed Crake Poliolimnas cinereus | Watercock Gallicrex cinerea | 1 | 1 | 0 |
| Watercock Gallicrex cinerea | Ruddy-breasted Crake Zapornia fusca | 1 | 1 | 0 |
| White-breasted Waterhen Amaurornis phoenicurus | White-bellied Sea-Eagle Icthyophaga leucogaster | 1 | 1 | 0 |
| Ruddy-breasted Crake Zapornia fusca | Baillon's Crake Zapornia pusilla | 1 | 0 | 1 |
| Grey Plover Pluvialis squatarola | Pacific Golden Plover Pluvialis fulva | 1 | 0 | 1 |
| Tibetan Sand Plover Anarhynchus atrifrons | Malaysian Plover Anarhynchus peronii | 1 | 1 | 0 |
| Tibetan Sand Plover Anarhynchus atrifrons | Kentish Plover Anarhynchus alexandrinus | 1 | 0 | 1 |
| Malaysian Plover Anarhynchus peronii | White-faced Plover Anarhynchus dealbatus | 1 | 1 | 0 |
| Kentish Plover Anarhynchus alexandrinus | White-faced Plover Anarhynchus dealbatus | 1 | 0 | 1 |
| Common Redshank Tringa totanus | Spotted Redshank Tringa erythropus | 1 | 0 | 1 |
| Curlew Sandpiper Calidris ferruginea | Temminck's Stint Calidris temminckii | 1 | 0 | 1 |
| Barred Buttonquail Turnix suscitator | Small Buttonquail Turnix sylvaticus | 1 | 0 | 1 |