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 |
|---|---|---|---|---|
| Lesser White-fronted Goose Anser erythropus | Eurasian Wryneck Jynx torquilla | 1 | 0 | 1 |
| Tundra Bean Goose Anser serrirostris | Pink-footed Goose Anser brachyrhynchus | 1 | 0 | 1 |
| Long-tailed Duck Clangula hyemalis | White-headed Duck Oxyura leucocephala | 1 | 0 | 1 |
| Goosander Mergus merganser | Red-breasted Merganser Mergus serrator | 1 | 1 | 0 |
| Red-breasted Merganser Mergus serrator | Marsh Warbler Acrocephalus palustris | 1 | 0 | 1 |
| Eurasian Nightjar Caprimulgus europaeus | White-winged Black Tern Chlidonias leucopterus | 1 | 0 | 1 |
| Stone-curlew Burhinus oedicnemus | Wood Warbler Phylloscopus sibilatrix | 1 | 1 | 0 |
| Common Ringed Plover Charadrius hiaticula | Ring Ouzel Turdus torquatus | 1 | 1 | 0 |
| Bar-tailed Godwit Limosa lapponica | Black-tailed Godwit Limosa limosa | 1 | 0 | 1 |
| Marsh Sandpiper Tringa stagnatilis | Wood Sandpiper Tringa glareola | 1 | 0 | 1 |
| Common Redshank Tringa totanus | Eurasian Blackbird Turdus merula | 1 | 1 | 0 |
| Caspian Gull Larus cachinnans | Gull-billed Tern Gelochelidon nilotica | 1 | 0 | 1 |
| Yellow-legged Gull Larus michahellis | Eurasian Spoonbill Platalea leucorodia | 1 | 1 | 0 |
| Little Tern Sternula albifrons | Black Kite Milvus migrans | 1 | 1 | 0 |
| Eurasian Bittern Botaurus stellaris | Eurasian Penduline Tit Remiz pendulinus | 1 | 0 | 1 |
| Eurasian Spoonbill Platalea leucorodia | Saker Falcon Falco cherrug | 1 | 1 | 0 |
| Booted Eagle Hieraaetus pennatus | Eurasian Goshawk Astur gentilis | 1 | 1 | 0 |
| Hen Harrier Circus cyaneus | Rough-legged Buzzard Buteo lagopus | 1 | 1 | 0 |
| Tengmalm's Owl Aegolius funereus | Barred Warbler Curruca nisoria | 1 | 1 | 0 |
| European Roller Coracias garrulus | Whinchat Saxicola rubetra | 1 | 0 | 1 |
| Great Grey Shrike Lanius excubitor | Eurasian Nuthatch Sitta europaea | 1 | 0 | 1 |
| Marsh Tit Poecile palustris | Rose-coloured Starling Pastor roseus | 1 | 0 | 1 |
| Eurasian Skylark Alauda arvensis | Mistle Thrush Turdus viscivorus | 1 | 1 | 0 |
| Icterine Warbler Hippolais icterina | Tawny Pipit Anthus campestris | 1 | 0 | 1 |
| Savi's Warbler Locustella luscinioides | House Sparrow Passer domesticus | 1 | 0 | 1 |
| Sand Martin Riparia riparia | European Serin Serinus serinus | 1 | 1 | 0 |
| Willow Warbler Phylloscopus trochilus | Common Chiffchaff Phylloscopus collybita | 1 | 0 | 1 |
| Eurasian Treecreeper Certhia familiaris | Short-toed Treecreeper Certhia brachydactyla | 1 | 0 | 1 |
| Mistle Thrush Turdus viscivorus | Fieldfare Turdus pilaris | 1 | 0 | 1 |
| European Pied Flycatcher Ficedula hypoleuca | Eurasian Siskin Spinus spinus | 1 | 0 | 1 |
| Common Rock Thrush Monticola saxatilis | European Stonechat Saxicola rubicola | 1 | 1 | 0 |
| Grey Wagtail Motacilla cinerea | Western Yellow Wagtail Motacilla flava | 1 | 1 | 0 |
| Meadow Pipit Anthus pratensis | Tree Pipit Anthus trivialis | 1 | 1 | 0 |
| Brambling Fringilla montifringilla | Rock Bunting Emberiza cia | 1 | 0 | 1 |
| Common Linnet Linaria cannabina | Eurasian Siskin Spinus spinus | 1 | 0 | 1 |
| Common Redpoll Acanthis flammea | Lesser Redpoll Acanthis cabaret | 1 | 0 | 1 |
| Cirl Bunting Emberiza cirlus | Yellowhammer Emberiza citrinella | 1 | 1 | 0 |