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 |
|---|---|---|---|---|
| Grey Nightjar Caprimulgus jotaka | Eurasian Nightjar Caprimulgus europaeus | 2 | 0 | 2 |
| Marsh Tit Poecile palustris | Black-bibbed Tit Poecile hypermelaenus | 2 | 2 | 0 |
| Blood Pheasant Ithaginis cruentus | Satyr Tragopan Tragopan satyra | 2 | 0 | 2 |
| Common Tailorbird Orthotomus sutorius | Dark-necked Tailorbird Orthotomus atrogularis | 2 | 0 | 2 |
| Black-backed Forktail Enicurus immaculatus | Slaty-backed Forktail Enicurus schistaceus | 2 | 2 | 0 |
| Yellow-rumped Flycatcher Ficedula zanthopygia | Narcissus Flycatcher Ficedula narcissina | 2 | 2 | 0 |
| Streaked Rosefinch Carpodacus rubicilloides | Red-fronted Rosefinch Carpodacus puniceus | 2 | 2 | 0 |
| Light-vented Bulbul Pycnonotus sinensis | Brambling Fringilla montifringilla | 2 | 2 | 0 |
| Demoiselle Crane Grus virgo | White-naped Crane Antigone vipio | 1 | 1 | 0 |
| Demoiselle Crane Grus virgo | Common Crane Grus grus | 1 | 1 | 0 |
| Oriental Plover Anarhynchus veredus | Tibetan Sand Plover Anarhynchus atrifrons | 1 | 0 | 1 |
| Siberian Sand Plover Anarhynchus mongolus | Tibetan Sand Plover Anarhynchus atrifrons | 1 | 0 | 1 |
| Wood Snipe Gallinago nemoricola | Swinhoe's Snipe Gallinago megala | 1 | 0 | 1 |
| Whiskered Tern Chlidonias hybrida | Eyebrowed Wren-Babbler Napothera epilepidota | 1 | 0 | 1 |
| Wedge-tailed Shearwater Ardenna pacifica | Sooty Shearwater Ardenna grisea | 1 | 0 | 1 |
| Great Frigatebird Fregata minor | Brown Booby Sula leucogaster | 1 | 0 | 1 |
| Red-footed Booby Sula sula | Brown Booby Sula leucogaster | 1 | 1 | 0 |
| Brown Booby Sula leucogaster | Masked Booby Sula dactylatra | 1 | 1 | 0 |
| Japanese Scops Owl Otus semitorques | Oriental Scops Owl Otus sunia | 1 | 1 | 0 |
| Golden-throated Barbet Psilopogon franklinii | Chinese Barbet Psilopogon faber | 1 | 0 | 1 |
| Isabelline Shrike Lanius isabellinus | Great Grey Shrike Lanius excubitor | 1 | 1 | 0 |
| Collared Treepie Dendrocitta frontalis | Collared Grosbeak Mycerobas affinis | 1 | 1 | 0 |
| Yellow-bellied Tit Periparus venustulus | Grey-crested Tit Lophophanes dichrous | 1 | 1 | 0 |
| Japanese Tit Parus minor | Brambling Fringilla montifringilla | 1 | 1 | 0 |
| Dark-necked Tailorbird Orthotomus atrogularis | Black-throated Prinia Prinia atrogularis | 1 | 1 | 0 |
| Dark-necked Tailorbird Orthotomus atrogularis | Rufescent Prinia Prinia rufescens | 1 | 1 | 0 |
| Sykes's Warbler Iduna rama | Manchurian Reed Warbler Acrocephalus tangorum | 1 | 1 | 0 |
| Black-browed Reed Warbler Acrocephalus bistrigiceps | Streaked Reed Warbler Acrocephalus sorghophilus | 1 | 0 | 1 |
| Blunt-winged Warbler Acrocephalus concinens | Grey-cheeked Warbler Phylloscopus poliogenys | 1 | 0 | 1 |
| Manchurian Reed Warbler Acrocephalus tangorum | Common Reed Warbler Acrocephalus scirpaceus | 1 | 0 | 1 |
| Common Reed Warbler Acrocephalus scirpaceus | Great Reed Warbler Acrocephalus arundinaceus | 1 | 0 | 1 |
| Common Reed Warbler Acrocephalus scirpaceus | Clamorous Reed Warbler Acrocephalus stentoreus | 1 | 1 | 0 |
| Great Reed Warbler Acrocephalus arundinaceus | Clamorous Reed Warbler Acrocephalus stentoreus | 1 | 1 | 0 |
| Chinese Bush Warbler Locustella tacsanowskia | Baikal Bush Warbler Locustella davidi | 1 | 0 | 1 |
| Baikal Bush Warbler Locustella davidi | Spotted Bush Warbler Locustella thoracica | 1 | 1 | 0 |
| Scaly-breasted Cupwing Pnoepyga albiventer | Golden Bush-Robin Tarsiger chrysaeus | 1 | 1 | 0 |
| Ashy-throated Warbler Phylloscopus maculipennis | Yellow-bellied Warbler Abroscopus superciliaris | 1 | 0 | 1 |
| Buff-throated Warbler Phylloscopus subaffinis | Mountain Chiffchaff Phylloscopus sindianus | 1 | 1 | 0 |
| Bianchi's Warbler Phylloscopus valentini | Alström's Warbler Phylloscopus soror | 1 | 0 | 1 |
| Martens's Warbler Phylloscopus omeiensis | Alström's Warbler Phylloscopus soror | 1 | 0 | 1 |
| Two-barred Warbler Phylloscopus plumbeitarsus | Emei Leaf Warbler Phylloscopus emeiensis | 1 | 0 | 1 |
| Emei Leaf Warbler Phylloscopus emeiensis | Pale-legged Leaf Warbler Phylloscopus tenellipes | 1 | 1 | 0 |
| Pale-legged Leaf Warbler Phylloscopus tenellipes | Arctic Warbler Phylloscopus borealis | 1 | 1 | 0 |
| Pale-legged Leaf Warbler Phylloscopus tenellipes | Kamchatka Leaf Warbler Phylloscopus examinandus | 1 | 1 | 0 |
| Tarim Babbler Rhopophilus albosuperciliaris | Beijing Babbler Rhopophilus pekinensis | 1 | 0 | 1 |
| Rufous-headed Parrotbill Paradoxornis bakeri | Short-tailed Parrotbill Suthora davidiana | 1 | 0 | 1 |
| Indochinese Yuhina Staphida torqueola | Black-chinned Yuhina Yuhina nigrimenta | 1 | 0 | 1 |
| Indochinese Yuhina Staphida torqueola | White-naped Yuhina Yuhina bakeri | 1 | 0 | 1 |
| Swinhoe's White-eye Zosterops simplex | Warbling White-eye Zosterops japonicus | 1 | 0 | 1 |
| Warbling White-eye Zosterops japonicus | Indian White-eye Zosterops palpebrosus | 1 | 1 | 0 |
| Chestnut-capped Babbler Timalia pileata | Rufous-capped Babbler Cyanoderma ruficeps | 1 | 1 | 0 |
| Large Scimitar-Babbler Erythrogenys hypoleucos | Black-streaked Scimitar-Babbler Erythrogenys gravivox | 1 | 0 | 1 |
| Nonggang Babbler Stachyris nonggangensis | Chinese Babax Pterorhinus lanceolatus | 1 | 0 | 1 |
| Rufous-throated Fulvetta Schoeniparus rufogularis | Rusty-capped Fulvetta Schoeniparus dubius | 1 | 1 | 0 |
| Eyebrowed Wren-Babbler Napothera epilepidota | Chestnut Bunting Emberiza rutila | 1 | 1 | 0 |
| Variegated Laughingthrush Trochalopteron variegatum | Elliot's Laughingthrush Trochalopteron elliotii | 1 | 1 | 0 |
| Rufous Sibia Heterophasia capistrata | Black-headed Sibia Heterophasia desgodinsi | 1 | 1 | 0 |
| Rose-coloured Starling Pastor roseus | Daurian Starling Agropsar sturninus | 1 | 0 | 1 |
| Indian Pied Starling Gracupica contra | White-shouldered Starling Sturnia sinensis | 1 | 0 | 1 |
| Alpine Thrush Zoothera mollissima | Himalayan Thrush Zoothera salimalii | 1 | 0 | 1 |
| Himalayan Thrush Zoothera salimalii | Dark-sided Thrush Zoothera marginata | 1 | 1 | 0 |
| Eurasian Blackbird Turdus merula | Chinese Blackbird Turdus mandarinus | 1 | 0 | 1 |
| Dusky Thrush Turdus eunomus | Naumann's Thrush Turdus naumanni | 1 | 1 | 0 |
| Hainan Blue Flycatcher Cyornis hainanus | Pale-chinned Flycatcher Cyornis poliogenys | 1 | 0 | 1 |
| European Robin Erithacus rubecula | Pere David's Snowfinch Pyrgilauda davidiana | 1 | 1 | 0 |
| Northern Wheatear Oenanthe oenanthe | Desert Wheatear Oenanthe deserti | 1 | 1 | 0 |
| Bohemian Waxwing Bombycilla garrulus | Japanese Waxwing Bombycilla japonica | 1 | 0 | 1 |
| Japanese Waxwing Bombycilla japonica | Yellow-vented Flowerpecker Pachyglossa chrysorrhea | 1 | 1 | 0 |
| Richard's Pipit Anthus richardi | Blyth's Pipit Anthus godlewskii | 1 | 1 | 0 |
| Meadow Pipit Anthus pratensis | Tree Pipit Anthus trivialis | 1 | 0 | 1 |
| Chinese Beautiful Rosefinch Carpodacus davidianus | Red-fronted Rosefinch Carpodacus puniceus | 1 | 0 | 1 |
| Tibetan Rosefinch Carpodacus roborowskii | Streaked Rosefinch Carpodacus rubicilloides | 1 | 0 | 1 |
| Snow Goose Anser caerulescens | Plaintive Cuckoo Cacomantis merulinus | 1 | 0 | 1 |
| Pine Bunting Emberiza leucocephalos | Grey-necked Bunting Emberiza buchanani | 1 | 1 | 0 |
| Satyr Tragopan Tragopan satyra | Temminck's Tragopan Tragopan temminckii | 1 | 1 | 0 |
| Willow Ptarmigan Lagopus lagopus | Rock Ptarmigan Lagopus muta | 1 | 0 | 1 |
| Willow Ptarmigan Lagopus lagopus | Black-billed Capercaillie Tetrao urogalloides | 1 | 1 | 0 |
| Stock Dove Columba oenas | Yellow-eyed Pigeon Columba eversmanni | 1 | 0 | 1 |
| Greater Coucal Centropus sinensis | Chestnut-winged Cuckoo Clamator coromandus | 1 | 1 | 0 |
| Large Hawk-Cuckoo Hierococcyx sparverioides | Northern Hawk-Cuckoo Hierococcyx hyperythrus | 1 | 0 | 1 |
| Demoiselle Crane Grus virgo | Sarus Crane Antigone antigone | 1 | 1 | 0 |