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 Redshank Tringa totanus | Spotted Redshank Tringa erythropus | 2 | 2 | 0 |
| Common Swift Apus apus | Little Swift Apus affinis | 1 | 1 | 0 |
| Common Ringed Plover Charadrius hiaticula | Little Ringed Plover Thinornis dubius | 1 | 1 | 0 |
| Whimbrel Numenius phaeopus | Eurasian Curlew Numenius arquata | 1 | 0 | 1 |
| Bar-tailed Godwit Limosa lapponica | Common Snipe Gallinago gallinago | 1 | 0 | 1 |
| Common Snipe Gallinago gallinago | Red-necked Phalarope Phalaropus lobatus | 1 | 0 | 1 |
| Grey Phalarope Phalaropus fulicarius | Red-necked Phalarope Phalaropus lobatus | 1 | 0 | 1 |
| Terek Sandpiper Xenus cinereus | Common Sandpiper Actitis hypoleucos | 1 | 0 | 1 |
| Common Sandpiper Actitis hypoleucos | Marsh Sandpiper Tringa stagnatilis | 1 | 0 | 1 |
| Green Sandpiper Tringa ochropus | Little Stint Calidris minuta | 1 | 0 | 1 |
| Marsh Sandpiper Tringa stagnatilis | Wood Sandpiper Tringa glareola | 1 | 0 | 1 |
| Spotted Redshank Tringa erythropus | Common Greenshank Tringa nebularia | 1 | 0 | 1 |
| Common Greenshank Tringa nebularia | Broad-billed Sandpiper Calidris falcinellus | 1 | 1 | 0 |
| Ruff Calidris pugnax | Broad-billed Sandpiper Calidris falcinellus | 1 | 1 | 0 |
| Ruff Calidris pugnax | Temminck's Stint Calidris temminckii | 1 | 1 | 0 |
| Broad-billed Sandpiper Calidris falcinellus | Temminck's Stint Calidris temminckii | 1 | 1 | 0 |
| Temminck's Stint Calidris temminckii | Sanderling Calidris alba | 1 | 0 | 1 |
| Temminck's Stint Calidris temminckii | Dunlin Calidris alpina | 1 | 1 | 0 |
| Long-tailed Skua Stercorarius longicaudus | Arctic Skua Stercorarius parasiticus | 1 | 1 | 0 |
| Black-headed Gull Chroicocephalus ridibundus | Common Gull Larus canus | 1 | 1 | 0 |
| Franklin's Gull Leucophaeus pipixcan | White-eyed Gull Ichthyaetus leucophthalmus | 1 | 1 | 0 |
| Common Gull Larus canus | Armenian Gull Larus armenicus | 1 | 0 | 1 |
| Caspian Gull Larus cachinnans | Lesser Black-backed Gull Larus fuscus | 1 | 1 | 0 |
| Whiskered Tern Chlidonias hybrida | White-winged Black Tern Chlidonias leucopterus | 1 | 0 | 1 |
| Squacco Heron Ardeola ralloides | Indian Pond Heron Ardeola grayii | 1 | 1 | 0 |
| Eastern Cattle-Egret Ardea coromanda | Great White Egret Ardea alba | 1 | 1 | 0 |
| European Honey-buzzard Pernis apivorus | Eurasian Goshawk Astur gentilis | 1 | 1 | 0 |
| Black Vulture Aegypius monachus | Griffon Vulture Gyps fulvus | 1 | 1 | 0 |
| Short-toed Eagle Circaetus gallicus | Booted Eagle Hieraaetus pennatus | 1 | 0 | 1 |
| Lesser Spotted Eagle Clanga pomarina | Black Kite Milvus migrans | 1 | 0 | 1 |
| Black Kite Milvus migrans | Common Buzzard Buteo buteo | 1 | 1 | 0 |
| Common Buzzard Buteo buteo | Long-legged Buzzard Buteo rufinus | 1 | 0 | 1 |
| Eurasian Scops Owl Otus scops | Pallid Scops Owl Otus brucei | 1 | 0 | 1 |
| Eurasian Wryneck Jynx torquilla | Blue Rock Thrush Monticola solitarius | 1 | 0 | 1 |
| Lesser Kestrel Falco naumanni | Red-footed Falcon Falco vespertinus | 1 | 1 | 0 |
| Lesser Kestrel Falco naumanni | Eurasian Hobby Falco subbuteo | 1 | 0 | 1 |
| Eleonora's Falcon Falco eleonorae | Sooty Falcon Falco concolor | 1 | 1 | 0 |
| Turkestan Shrike Lanius phoenicuroides | Isabelline Shrike Lanius isabellinus | 1 | 1 | 0 |
| Greater Hoopoe-Lark Alaemon alaudipes | Eurasian Skylark Alauda arvensis | 1 | 0 | 1 |
| Greater Hoopoe-Lark Alaemon alaudipes | Fieldfare Turdus pilaris | 1 | 1 | 0 |
| Bar-tailed Lark Ammomanes cinctura | Desert Lark Ammomanes deserti | 1 | 0 | 1 |
| Greater Short-toed Lark Calandrella brachydactyla | Eurasian Skylark Alauda arvensis | 1 | 1 | 0 |
| Woodlark Lullula arborea | Oriental Skylark Alauda gulgula | 1 | 0 | 1 |
| Eurasian Skylark Alauda arvensis | Oriental Skylark Alauda gulgula | 1 | 1 | 0 |
| Oriental Skylark Alauda gulgula | Crested Lark Galerida cristata | 1 | 1 | 0 |
| Sykes's Warbler Iduna rama | Garden Warbler Sylvia borin | 1 | 1 | 0 |
| Eastern Olivaceous Warbler Iduna pallida | Blyth's Reed Warbler Acrocephalus dumetorum | 1 | 1 | 0 |
| Moustached Warbler Acrocephalus melanopogon | Sedge Warbler Acrocephalus schoenobaenus | 1 | 0 | 1 |
| Marsh Warbler Acrocephalus palustris | Willow Warbler Phylloscopus trochilus | 1 | 1 | 0 |
| Common Reed Warbler Acrocephalus scirpaceus | Basra Reed Warbler Acrocephalus griseldis | 1 | 1 | 0 |
| Common Reed Warbler Acrocephalus scirpaceus | Clamorous Reed Warbler Acrocephalus stentoreus | 1 | 1 | 0 |
| Basra Reed Warbler Acrocephalus griseldis | Clamorous Reed Warbler Acrocephalus stentoreus | 1 | 1 | 0 |
| Basra Reed Warbler Acrocephalus griseldis | River Warbler Locustella fluviatilis | 1 | 0 | 1 |
| River Warbler Locustella fluviatilis | Savi's Warbler Locustella luscinioides | 1 | 1 | 0 |
| Common Grasshopper Warbler Locustella naevia | Finsch's Wheatear Oenanthe finschii | 1 | 0 | 1 |
| Sand Martin Riparia riparia | Pale Martin Riparia diluta | 1 | 0 | 1 |
| Sand Martin Riparia riparia | Barn Swallow Hirundo rustica | 1 | 1 | 0 |
| Eurasian Crag Martin Ptyonoprogne rupestris | Streak-throated Swallow Petrochelidon fluvicola | 1 | 0 | 1 |
| Plain Leaf Warbler Phylloscopus neglectus | Mountain Chiffchaff Phylloscopus sindianus | 1 | 1 | 0 |
| Willow Warbler Phylloscopus trochilus | Cetti's Warbler Cettia cetti | 1 | 1 | 0 |
| Mountain Chiffchaff Phylloscopus sindianus | Common Chiffchaff Phylloscopus collybita | 1 | 0 | 1 |
| Lesser Whitethroat Curruca curruca | Asian Desert Warbler Curruca nana | 1 | 0 | 1 |
| Thrush Nightingale Luscinia luscinia | Common Nightingale Luscinia megarhynchos | 1 | 1 | 0 |
| Common Redstart Phoenicurus phoenicurus | Finsch's Wheatear Oenanthe finschii | 1 | 1 | 0 |
| Black Redstart Phoenicurus ochruros | Pale Rockfinch Carpospiza brachydactyla | 1 | 1 | 0 |
| European Stonechat Saxicola rubicola | Siberian Stonechat Saxicola maurus | 1 | 1 | 0 |
| Northern Wheatear Oenanthe oenanthe | Isabelline Wheatear Oenanthe isabellina | 1 | 0 | 1 |
| Desert Wheatear Oenanthe deserti | Pied Wheatear Oenanthe pleschanka | 1 | 1 | 0 |
| Desert Wheatear Oenanthe deserti | Finsch's Wheatear Oenanthe finschii | 1 | 0 | 1 |
| Pied Wheatear Oenanthe pleschanka | Variable Wheatear Oenanthe picata | 1 | 0 | 1 |
| Finsch's Wheatear Oenanthe finschii | Kurdish Wheatear Oenanthe xanthoprymna | 1 | 1 | 0 |
| Radde's Accentor Prunella ocularis | Dunnock Prunella modularis | 1 | 0 | 1 |
| House Sparrow Passer domesticus | Dead Sea Sparrow Passer moabiticus | 1 | 0 | 1 |
| Eastern Yellow Wagtail Motacilla tschutschensis | Pied Wagtail/White Wagtail Motacilla alba | 1 | 1 | 0 |
| Richard's Pipit Anthus richardi | Tawny Pipit Anthus campestris | 1 | 1 | 0 |
| Water Pipit Anthus spinoletta | Buff-bellied Pipit Anthus rubescens | 1 | 0 | 1 |
| Red-headed Bunting Emberiza bruniceps | Ortolan Bunting Emberiza hortulana | 1 | 1 | 0 |
| Pin-tailed Sandgrouse Pterocles alchata | Asian Houbara Chlamydotis macqueenii | 1 | 0 | 1 |
| Cinereous Bunting Emberiza cineracea | Ortolan Bunting Emberiza hortulana | 1 | 1 | 0 |