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 |
|---|---|---|---|---|
| White-crowned Forktail Enicurus leschenaulti | Bornean Forktail Enicurus borneensis | 3 | 3 | 0 |
| Sunda Cuckoo Cuculus lepidus | Oriental Cuckoo Cuculus optatus | 2 | 1 | 1 |
| Lesser Crested Tern Thalasseus bengalensis | Great Crested Tern Thalasseus bergii | 2 | 0 | 2 |
| Grey-and-buff Woodpecker Hemicircus concretus | Grey-capped Pygmy Woodpecker Yungipicus canicapillus | 2 | 0 | 2 |
| Hill Prinia Prinia superciliaris | Rufescent Prinia Prinia rufescens | 2 | 1 | 1 |
| Penan Bulbul Alophoixus ruficrissus | Ochraceous Bulbul Alophoixus ochraceus | 2 | 2 | 0 |
| Japanese Leaf Warbler Phylloscopus xanthodryas | Arctic Warbler Phylloscopus borealis | 2 | 2 | 0 |
| Blue-and-white Flycatcher Cyanoptila cyanomelana | Zappey's Flycatcher Cyanoptila cumatilis | 2 | 1 | 1 |
| Long-billed Partridge Rhizothera longirostris | Malayan Crestless Fireback Lophura erythrophthalma | 1 | 1 | 0 |
| Chestnut-necklaced Partridge Tropicoperdix charltonii | Sabah Partridge Tropicoperdix graydoni | 1 | 0 | 1 |
| Bornean Peacock-Pheasant Polyplectron schleiermacheri | Malayan Peacock-Pheasant Polyplectron malacense | 1 | 0 | 1 |
| Metallic Pigeon Columba vitiensis | Barred Cuckoo-Dove Macropygia unchall | 1 | 0 | 1 |
| Little Green-Pigeon Treron olax | Malayan Black-capped Babbler Pellorneum nigrocapitatum | 1 | 1 | 0 |
| Yellow-vented Green-Pigeon Treron seimundi | Wedge-tailed Green-Pigeon Treron sphenurus | 1 | 1 | 0 |
| Grey Imperial-Pigeon Ducula pickeringii | Mountain Imperial-Pigeon Ducula badia | 1 | 1 | 0 |
| Chestnut-breasted Malkoha Phaenicophaeus curvirostris | Black-bellied Malkoha Phaenicophaeus diardi | 1 | 0 | 1 |
| Asian Emerald Cuckoo Chrysococcyx maculatus | Little Bronze-Cuckoo Chalcites minutillus | 1 | 1 | 0 |
| Plaintive Cuckoo Cacomantis merulinus | Moustached Hawk-Cuckoo Hierococcyx vagans | 1 | 1 | 0 |
| Northern Hawk-Cuckoo Hierococcyx hyperythrus | Malaysian Hawk-Cuckoo Hierococcyx fugax | 1 | 1 | 0 |
| Dark Hawk-Cuckoo Hierococcyx bocki | Hodgson's Hawk-Cuckoo Hierococcyx nisicolor | 1 | 0 | 1 |
| Large Frogmouth Batrachostomus auritus | Dulit Frogmouth Batrachostomus harterti | 1 | 0 | 1 |
| Gould's Frogmouth Batrachostomus stellatus | Bornean Frogmouth Batrachostomus mixtus | 1 | 1 | 0 |
| Gould's Frogmouth Batrachostomus stellatus | Blyth's Frogmouth Batrachostomus affinis | 1 | 1 | 0 |
| Gould's Frogmouth Batrachostomus stellatus | Sunda Frogmouth Batrachostomus cornutus | 1 | 1 | 0 |
| Malaysian Eared-Nightjar Lyncornis temminckii | Great Eared-Nightjar Lyncornis macrotis | 1 | 0 | 1 |
| Grey Nightjar Caprimulgus jotaka | Bonaparte's Nightjar Caprimulgus concretus | 1 | 1 | 0 |
| Plume-toed Swiftlet Collocalia affinis | Himalayan Swiftlet Aerodramus brevirostris | 1 | 0 | 1 |
| Mossy-nest Swiftlet Aerodramus salangana | Black-nest Swiftlet Aerodramus maximus | 1 | 1 | 0 |
| Pacific Swift Apus pacificus | Cook's Swift Apus cooki | 1 | 0 | 1 |
| House Swift Apus nipalensis | Asian Palm Swift Cypsiurus balasiensis | 1 | 1 | 0 |
| Ruddy-breasted Crake Zapornia fusca | Baillon's Crake Zapornia pusilla | 1 | 0 | 1 |
| Siberian Sand Plover Anarhynchus mongolus | Greater Sand Plover Anarhynchus leschenaultii | 1 | 1 | 0 |
| Bar-tailed Godwit Limosa lapponica | Asian Dowitcher Limnodromus semipalmatus | 1 | 0 | 1 |
| Asian Dowitcher Limnodromus semipalmatus | Pin-tailed Snipe Gallinago stenura | 1 | 0 | 1 |
| Common Sandpiper Actitis hypoleucos | Grey-tailed Tattler Tringa brevipes | 1 | 1 | 0 |
| Green Sandpiper Tringa ochropus | Wood Sandpiper Tringa glareola | 1 | 1 | 0 |
| Nordmann's Greenshank Tringa guttifer | Common Greenshank Tringa nebularia | 1 | 1 | 0 |
| Great Knot Calidris tenuirostris | Red Knot Calidris canutus | 1 | 0 | 1 |
| Ruff Calidris pugnax | Sharp-tailed Sandpiper Calidris acuminata | 1 | 0 | 1 |
| Red-necked Stint Calidris ruficollis | Sanderling Calidris alba | 1 | 1 | 0 |
| Dunlin Calidris alpina | Ashy Minivet Pericrocotus divaricatus | 1 | 1 | 0 |
| Dunlin Calidris alpina | Pectoral Sandpiper Calidris melanotos | 1 | 0 | 1 |
| Arctic Skua Stercorarius parasiticus | Brown-headed Gull Chroicocephalus brunnicephalus | 1 | 1 | 0 |
| Black-headed Gull Chroicocephalus ridibundus | Laughing Gull Leucophaeus atricilla | 1 | 0 | 1 |
| Little Tern Sternula albifrons | Caspian Tern Hydroprogne caspia | 1 | 1 | 0 |
| Whiskered Tern Chlidonias hybrida | White-winged Black Tern Chlidonias leucopterus | 1 | 0 | 1 |
| Wedge-tailed Shearwater Ardenna pacifica | Short-tailed Shearwater Ardenna tenuirostris | 1 | 1 | 0 |
| Lesser Frigatebird Fregata ariel | Little Cormorant Microcarbo niger | 1 | 1 | 0 |
| Latham's Snipe Gallinago hardwickii | Chinese Egret Egretta eulophotes | 1 | 0 | 1 |
| Pacific Reef-Heron Egretta sacra | Chinese Egret Egretta eulophotes | 1 | 0 | 1 |
| Striated Heron Butorides striata | Indian Pond Heron Ardeola grayii | 1 | 0 | 1 |
| Chinese Pond Heron Ardeola bacchus | Javan Pond Heron Ardeola speciosa | 1 | 1 | 0 |
| Javan Pond Heron Ardeola speciosa | Eastern Cattle-Egret Ardea coromanda | 1 | 1 | 0 |
| Black Vulture Aegypius monachus | Bar-bellied Cuckooshrike Coracina striata | 1 | 1 | 0 |
| Bat Hawk Macheiramphus alcinus | Mountain Hawk-Eagle Nisaetus nipalensis | 1 | 0 | 1 |
| Eastern Marsh Harrier Circus spilonotus | Pied Harrier Circus melanoleucos | 1 | 0 | 1 |
| Japanese Sparrowhawk Tachyspiza gularis | Besra Tachyspiza virgata | 1 | 0 | 1 |
| Mantanani Scops Owl Otus mantananensis | Oriental Scops Owl Otus sunia | 1 | 0 | 1 |
| Great-billed Heron Ardea sumatrana | Short-eared Owl Asio flammeus | 1 | 0 | 1 |
| Cinnamon-rumped Trogon Harpactes orrhophaeus | Scarlet-rumped Trogon Harpactes duvaucelii | 1 | 1 | 0 |
| Bushy-crested Hornbill Anorrhinus galeritus | Oriental Pied-Hornbill Anthracoceros albirostris | 1 | 1 | 0 |
| Wreathed Hornbill Rhyticeros undulatus | Plain-pouched Hornbill Rhyticeros subruficollis | 1 | 1 | 0 |
| Wreathed Hornbill Rhyticeros undulatus | Wrinkled Hornbill Rhabdotorrhinus corrugatus | 1 | 0 | 1 |
| Black-backed Dwarf-Kingfisher Ceyx erithaca | Rufous-backed Dwarf-Kingfisher Ceyx rufidorsa | 1 | 1 | 0 |
| Blue-tailed Bee-eater Merops philippinus | Chestnut-headed Bee-eater Merops leschenaulti | 1 | 0 | 1 |
| Golden-throated Barbet Psilopogon franklinii | Mountain Barbet Psilopogon monticola | 1 | 0 | 1 |
| Sunda Pygmy Woodpecker Yungipicus moluccensis | Grey-capped Pygmy Woodpecker Yungipicus canicapillus | 1 | 1 | 0 |
| Bay Woodpecker Blythipicus pyrrhotis | Orange-backed Woodpecker Chrysocolaptes validus | 1 | 1 | 0 |
| Bay Woodpecker Blythipicus pyrrhotis | Greater Flameback Chrysocolaptes guttacristatus | 1 | 0 | 1 |
| Rufous Woodpecker Micropternus brachyurus | Bamboo Woodpecker Gecinulus viridis | 1 | 1 | 0 |
| Buff-necked Woodpecker Meiglyptes tukki | Buff-rumped Woodpecker Meiglyptes grammithorax | 1 | 1 | 0 |
| Common Flameback Dinopium javanense | Lesser Yellownape Picus chlorolophus | 1 | 1 | 0 |
| Lesser Yellownape Picus chlorolophus | Streak-breasted Woodpecker Picus viridanus | 1 | 1 | 0 |
| Laced Woodpecker Picus vittatus | Banded Woodpecker Chrysophlegma miniaceum | 1 | 0 | 1 |
| Banded Woodpecker Chrysophlegma miniaceum | Greater Yellownape Chrysophlegma flavinucha | 1 | 1 | 0 |
| Greater Yellownape Chrysophlegma flavinucha | Checker-throated Woodpecker Chrysophlegma mentale | 1 | 1 | 0 |
| Banded Woodpecker Chrysophlegma miniaceum | White-bellied Woodpecker Dryocopus javensis | 1 | 0 | 1 |
| Checker-throated Woodpecker Chrysophlegma mentale | White-bellied Woodpecker Dryocopus javensis | 1 | 0 | 1 |
| Whitehead's Broadbill Calyptomena whiteheadi | Silver-breasted Broadbill Serilophus lunatus | 1 | 1 | 0 |
| Black-and-red Broadbill Cymbirhynchus macrorhynchos | Black-and-yellow Broadbill Eurylaimus ochromalus | 1 | 0 | 1 |
| Black-crowned Pitta Erythropitta ussheri | Blue-banded Pitta Erythropitta arquata | 1 | 1 | 0 |
| Malayan Banded-Pitta Hydrornis irena | Bornean Banded-Pitta Hydrornis schwaneri | 1 | 1 | 0 |
| Fiery Minivet Pericrocotus igneus | Grey-chinned Minivet Pericrocotus solaris | 1 | 0 | 1 |
| Grey-chinned Minivet Pericrocotus solaris | Scarlet Minivet Pericrocotus speciosus | 1 | 1 | 0 |
| Scarlet Minivet Pericrocotus speciosus | Ashy Minivet Pericrocotus divaricatus | 1 | 1 | 0 |
| White-bellied Erpornis Erpornis zantholeuca | Mangrove Whistler Pachycephala cinerea | 1 | 0 | 1 |
| Dark-throated Oriole Oriolus xanthonotus | Ventriloquial Oriole Oriolus consobrinus | 1 | 0 | 1 |
| Black-and-crimson Oriole Oriolus consanguineus | Large Woodshrike Tephrodornis virgatus | 1 | 1 | 0 |
| White-breasted Woodswallow Artamus leucorynchus | Bar-winged Flycatcher-shrike Hemipus picatus | 1 | 1 | 0 |
| Green Iora Aegithina viridissima | Malaysian Pied-Fantail Rhipidura javanica | 1 | 1 | 0 |
| Common Iora Aegithina tiphia | Great Iora Aegithina lafresnayei | 1 | 0 | 1 |
| Malaysian Pied-Fantail Rhipidura javanica | White-throated Fantail Rhipidura albicollis | 1 | 1 | 0 |
| Malaysian Pied-Fantail Rhipidura javanica | Ashy Drongo Dicrurus leucophaeus | 1 | 1 | 0 |
| Black Drongo Dicrurus macrocercus | Crow-billed Drongo Dicrurus annectens | 1 | 0 | 1 |
| Black Paradise-Flycatcher Terpsiphone atrocaudata | Amur Paradise-Flycatcher Terpsiphone incei | 1 | 1 | 0 |
| Black Paradise-Flycatcher Terpsiphone atrocaudata | Blyth's Paradise-Flycatcher Terpsiphone affinis | 1 | 1 | 0 |
| Amur Paradise-Flycatcher Terpsiphone incei | Blyth's Paradise-Flycatcher Terpsiphone affinis | 1 | 1 | 0 |
| Slender-billed Crow Corvus enca | Large-billed Crow Corvus macrorhynchos | 1 | 1 | 0 |
| Common Tailorbird Orthotomus sutorius | Dark-necked Tailorbird Orthotomus atrogularis | 1 | 1 | 0 |
| Middendorff's Grasshopper Warbler Helopsaltes ochotensis | Friendly Bush Warbler Locustella accentor | 1 | 1 | 0 |
| Penan Bulbul Alophoixus ruficrissus | White-necked Babbler Stachyris leucotis | 1 | 1 | 0 |
| Grey-cheeked Bulbul Alophoixus tephrogenys | Ochraceous Bulbul Alophoixus ochraceus | 1 | 0 | 1 |
| Penan Bulbul Alophoixus ruficrissus | Finsch's Bulbul Iole finschii | 1 | 0 | 1 |
| Charlotte's Bulbul Iole charlottae | Van Hasselt's Sunbird Leptocoma brasiliana | 1 | 1 | 0 |
| Mountain Bulbul Ixos mcclellandii | Black-headed Bulbul Microtarsus melanocephalos | 1 | 1 | 0 |
| Grey-bellied Bulbul Rubigula cyaniventris | Bornean Bulbul Rubigula montis | 1 | 1 | 0 |
| Grey-bellied Bulbul Rubigula cyaniventris | Rufous-winged Fulvetta Schoeniparus castaneceps | 1 | 1 | 0 |
| Black-crested Bulbul Rubigula flaviventris | Bornean Bulbul Rubigula montis | 1 | 0 | 1 |
| Red-eyed Bulbul Pycnonotus brunneus | Cream-eyed Bulbul Pycnonotus pseudosimplex | 1 | 1 | 0 |
| Red-eyed Bulbul Pycnonotus brunneus | Straw-headed Bulbul Pycnonotus zeylanicus | 1 | 0 | 1 |
| Pale-faced Bulbul Pycnonotus leucops | Yellow-vented Bulbul Pycnonotus goiavier | 1 | 1 | 0 |
| Indian Pond Heron Ardeola grayii | Two-barred Warbler Phylloscopus plumbeitarsus | 1 | 0 | 1 |
| Black-capped White-eye Zosterops atricapilla | Hume's White-eye Zosterops auriventer | 1 | 1 | 0 |
| Chestnut-winged Babbler Cyanoderma erythropterum | Grey-hooded Babbler Cyanoderma bicolor | 1 | 1 | 0 |
| Grey-hooded Babbler Cyanoderma bicolor | Bare-headed Laughingthrush Melanocichla calva | 1 | 1 | 0 |
| Marbled Wren-Babbler Turdinus marmoratus | Black-throated Wren-Babbler Turdinus atrigularis | 1 | 1 | 0 |
| Grey-breasted Babbler Malacopteron albogulare | Moustached Babbler Malacopteron magnirostre | 1 | 1 | 0 |
| Malayan Black-capped Babbler Pellorneum nigrocapitatum | Bornean Black-capped Babbler Pellorneum capistratoides | 1 | 0 | 1 |
| Short-tailed Babbler Pellorneum malaccense | White-chested Babbler Pellorneum rostratum | 1 | 1 | 0 |
| Streaked Wren-Babbler Gypsophila brevicaudata | Eyebrowed Wren-Babbler Napothera epilepidota | 1 | 0 | 1 |
| Himalayan Cutia Cutia nipalensis | Long-tailed Sibia Heterophasia picaoides | 1 | 1 | 0 |
| Blue-winged Minla Actinodura cyanouroptera | Silver-eared Mesia Leiothrix argentauris | 1 | 1 | 0 |
| Everett's Thrush Zoothera everetti | White's Thrush Zoothera aurea | 1 | 1 | 0 |
| Siberian Thrush Geokichla sibirica | Eyebrowed Thrush Turdus obscurus | 1 | 1 | 0 |
| Orange-headed Thrush Geokichla citrina | Eyebrowed Thrush Turdus obscurus | 1 | 0 | 1 |
| Blue-and-white Flycatcher Cyanoptila cyanomelana | Indigo Flycatcher Eumyias indigo | 1 | 0 | 1 |
| Chinese Blue Flycatcher Cyornis glaucicomans | Dayak Blue Flycatcher Cyornis montanus | 1 | 1 | 0 |
| Bornean Blue Flycatcher Cyornis superbus | Mangrove Blue Flycatcher Cyornis rufigastra | 1 | 1 | 0 |
| Chestnut-tailed Jungle Flycatcher Cyornis ruficauda | Eyebrowed Jungle Flycatcher Vauriella gularis | 1 | 1 | 0 |
| Scarlet-breasted Flowerpecker Prionochilus thoracicus | Thick-billed Flowerpecker Pachyglossa agilis | 1 | 1 | 0 |
| Thick-billed Flowerpecker Pachyglossa agilis | Brown-backed Flowerpecker Pachyglossa everetti | 1 | 0 | 1 |
| Plain Flowerpecker Dicaeum minullum | Scarlet-backed Flowerpecker Dicaeum cruentatum | 1 | 1 | 0 |
| Chestnut-capped Thrush Geokichla interpres | Long-billed Spiderhunter Arachnothera robusta | 1 | 0 | 1 |
| Whitehead's Spiderhunter Arachnothera juliae | Spectacled Spiderhunter Arachnothera flavigaster | 1 | 1 | 0 |
| Grey-and-buff Woodpecker Hemicircus concretus | Bornean Spiderhunter Arachnothera everetti | 1 | 0 | 1 |
| Dusky Munia Lonchura fuscans | Chestnut Munia Lonchura atricapilla | 1 | 0 | 1 |
| Plain-backed Sparrow Passer flaveolus | Eurasian Tree Sparrow Passer montanus | 1 | 1 | 0 |
| Pechora Pipit Anthus gustavi | Red-throated Pipit Anthus cervinus | 1 | 1 | 0 |