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 |
|---|---|---|---|---|
| Garganey Spatula querquedula | Northern Pintail Anas acuta | 1 | 0 | 1 |
| Rock Partridge Alectoris graeca | Little Grebe Tachybaptus ruficollis | 1 | 0 | 1 |
| Rock Partridge Alectoris graeca | European Honey-buzzard Pernis apivorus | 1 | 0 | 1 |
| Greater Flamingo Phoenicopterus roseus | Great Crested Grebe Podiceps cristatus | 1 | 1 | 0 |
| Asian Houbara Chlamydotis macqueenii | Little Bustard Tetrax tetrax | 1 | 1 | 0 |
| Alpine Swift Tachymarptis melba | Common Swift Apus apus | 1 | 0 | 1 |
| Common Swift Apus apus | Pallid Swift Apus pallidus | 1 | 0 | 1 |
| Allen's Gallinule Porphyrio alleni | Baillon's Crake Zapornia pusilla | 1 | 0 | 1 |
| Little Crake Zapornia parva | Baillon's Crake Zapornia pusilla | 1 | 0 | 1 |
| Sanderling Calidris alba | Baird's Sandpiper Calidris bairdii | 1 | 1 | 0 |
| Little Stint Calidris minuta | White-rumped Sandpiper Calidris fuscicollis | 1 | 0 | 1 |
| Arctic Skua Stercorarius parasiticus | Black-throated Diver Gavia arctica | 1 | 1 | 0 |
| Black-headed Gull Chroicocephalus ridibundus | Yellow-legged Gull Larus michahellis | 1 | 0 | 1 |
| Yellow-legged Gull Larus michahellis | Little Tern Sternula albifrons | 1 | 1 | 0 |
| Black-crowned Night Heron Nycticorax nycticorax | Common Magpie Pica pica | 1 | 1 | 0 |
| Eurasian Spoonbill Platalea leucorodia | Redwing Turdus iliacus | 1 | 1 | 0 |
| Imperial Eagle Aquila heliaca | Pied Wheatear Oenanthe pleschanka | 1 | 1 | 0 |
| Bonelli's Eagle Aquila fasciata | Common Firecrest Regulus ignicapilla | 1 | 1 | 0 |
| Hen Harrier Circus cyaneus | Bearded Tit Panurus biarmicus | 1 | 1 | 0 |
| Black Kite Milvus migrans | Cretzschmar's Bunting Emberiza caesia | 1 | 1 | 0 |
| Blue-cheeked Bee-eater Merops persicus | European Bee-eater Merops apiaster | 1 | 0 | 1 |
| Lesser Kestrel Falco naumanni | Eleonora's Falcon Falco eleonorae | 1 | 1 | 0 |
| Shore Lark Eremophila alpestris | White-throated Dipper Cinclus cinclus | 1 | 0 | 1 |
| Greater Short-toed Lark Calandrella brachydactyla | Turkestan Short-toed Lark Alaudala heinei | 1 | 1 | 0 |
| Icterine Warbler Hippolais icterina | Krüper's Nuthatch Sitta krueperi | 1 | 0 | 1 |
| Moustached Warbler Acrocephalus melanopogon | Ortolan Bunting Emberiza hortulana | 1 | 0 | 1 |
| Paddyfield Warbler Acrocephalus agricola | Great Reed Warbler Acrocephalus arundinaceus | 1 | 1 | 0 |
| Common Grasshopper Warbler Locustella naevia | Willow Warbler Phylloscopus trochilus | 1 | 1 | 0 |
| Yellow-browed Warbler Phylloscopus inornatus | Hume's Warbler Phylloscopus humei | 1 | 0 | 1 |
| African Desert Warbler Curruca deserti | Asian Desert Warbler Curruca nana | 1 | 1 | 0 |
| Redwing Turdus iliacus | Eurasian Blackbird Turdus merula | 1 | 1 | 0 |
| Eurasian Blackbird Turdus merula | Alpine Accentor Prunella collaris | 1 | 0 | 1 |
| Common Nightingale Luscinia megarhynchos | Semicollared Flycatcher Ficedula semitorquata | 1 | 1 | 0 |
| Moussier's Redstart Phoenicurus moussieri | Common Redstart Phoenicurus phoenicurus | 1 | 0 | 1 |
| Pale Rockfinch Carpospiza brachydactyla | Trumpeter Finch Bucanetes githagineus | 1 | 1 | 0 |
| Richard's Pipit Anthus richardi | Blyth's Pipit Anthus godlewskii | 1 | 0 | 1 |
| Tree Pipit Anthus trivialis | Common Linnet Linaria cannabina | 1 | 1 | 0 |
| Common Chaffinch Fringilla coelebs | European Goldfinch Carduelis carduelis | 1 | 1 | 0 |
| European Goldfinch Carduelis carduelis | Cirl Bunting Emberiza cirlus | 1 | 1 | 0 |