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 |
|---|---|---|---|---|
| Goosander Mergus merganser | Red-breasted Merganser Mergus serrator | 1 | 1 | 0 |
| Red-necked Phalarope Phalaropus lobatus | Terek Sandpiper Xenus cinereus | 1 | 1 | 0 |
| Ruff Calidris pugnax | Curlew Sandpiper Calidris ferruginea | 1 | 1 | 0 |
| Dunlin Calidris alpina | Little Stint Calidris minuta | 1 | 1 | 0 |
| Black-winged Pratincole Glareola nordmanni | Collared Pratincole Glareola pratincola | 1 | 0 | 1 |
| Arctic Skua Stercorarius parasiticus | Pomarine Skua Stercorarius pomarinus | 1 | 1 | 0 |
| Common Gull Larus canus | Caspian Gull Larus cachinnans | 1 | 1 | 0 |
| Yellow-legged Gull Larus michahellis | Armenian Gull Larus armenicus | 1 | 0 | 1 |
| Little Tern Sternula albifrons | Whiskered Tern Chlidonias hybrida | 1 | 1 | 0 |
| Pygmy Cormorant Microcarbo pygmaeus | Grey Heron Ardea cinerea | 1 | 1 | 0 |
| Little Egret Egretta garzetta | Western Cattle-Egret Ardea ibis | 1 | 1 | 0 |
| Black Vulture Aegypius monachus | Griffon Vulture Gyps fulvus | 1 | 0 | 1 |
| White-backed Woodpecker Dendrocopos leucotos | Syrian Woodpecker Dendrocopos syriacus | 1 | 1 | 0 |
| Red-footed Falcon Falco vespertinus | Eurasian Hobby Falco subbuteo | 1 | 0 | 1 |
| Sombre Tit Poecile lugubris | Marsh Tit Poecile palustris | 1 | 0 | 1 |
| Garden Warbler Sylvia borin | Common Nightingale Luscinia megarhynchos | 1 | 1 | 0 |
| Western Rock Nuthatch Sitta neumayer | Eurasian Nuthatch Sitta europaea | 1 | 1 | 0 |
| Northern Wheatear Oenanthe oenanthe | Isabelline Wheatear Oenanthe isabellina | 1 | 0 | 1 |