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 |
|---|---|---|---|---|
| Light-vented Bulbul Pycnonotus sinensis | Styan's Bulbul Pycnonotus taivanus | 2 | 0 | 2 |
| Common Cuckoo Cuculus canorus | Oriental Cuckoo Cuculus optatus | 1 | 1 | 0 |
| Grey Nightjar Caprimulgus jotaka | Savanna Nightjar Caprimulgus affinis | 1 | 1 | 0 |
| Red-necked Stint Calidris ruficollis | Spoon-billed Sandpiper Calidris pygmaea | 1 | 0 | 1 |
| Sabine's Gull Xema sabini | Saunders's Gull Saundersilarus saundersi | 1 | 0 | 1 |
| Lesser Black-backed Gull Larus fuscus | Slaty-backed Gull Larus schistisagus | 1 | 1 | 0 |
| Great Crested Tern Thalasseus bergii | Red-billed Tropicbird Phaethon aethereus | 1 | 0 | 1 |
| Grey-faced Buzzard Butastur indicus | Chinese Sparrowhawk Tachyspiza soloensis | 1 | 1 | 0 |
| Common Buzzard Buteo buteo | Eastern Buzzard Buteo japonicus | 1 | 0 | 1 |
| Blue-cheeked Bee-eater Merops persicus | Blue-tailed Bee-eater Merops philippinus | 1 | 0 | 1 |
| Blue-tailed Bee-eater Merops philippinus | Rainbow Bee-eater Merops ornatus | 1 | 0 | 1 |
| Grey-chinned Minivet Pericrocotus solaris | Scarlet Minivet Pericrocotus speciosus | 1 | 1 | 0 |
| Great Grey Shrike Lanius excubitor | Chinese Grey Shrike Lanius sphenocercus | 1 | 0 | 1 |
| Eastern Crowned Warbler Phylloscopus coronatus | Ijima's Leaf Warbler Phylloscopus ijimae | 1 | 1 | 0 |
| White-spectacled Warbler Phylloscopus intermedius | Bianchi's Warbler Phylloscopus valentini | 1 | 1 | 0 |
| Bianchi's Warbler Phylloscopus valentini | Alström's Warbler Phylloscopus soror | 1 | 0 | 1 |
| Rufous-capped Babbler Cyanoderma ruficeps | Black-necklaced Scimitar-Babbler Erythrogenys erythrocnemis | 1 | 0 | 1 |
| Rufous-bellied Niltava Niltava sundara | Taiwan Vivid Niltava Niltava vivida | 1 | 1 | 0 |
| Yellow-rumped Flycatcher Ficedula zanthopygia | Green-backed Flycatcher Ficedula elisae | 1 | 0 | 1 |
| Japanese Wagtail Motacilla grandis | Pied Wagtail/White Wagtail Motacilla alba | 1 | 1 | 0 |
| Rosy Pipit Anthus roseatus | Pechora Pipit Anthus gustavi | 1 | 1 | 0 |
| Tufted Duck Aythya fuligula | Lesser Scaup Aythya affinis | 1 | 0 | 1 |
| Black-faced Bunting Emberiza spodocephala | Masked Bunting Emberiza personata | 1 | 0 | 1 |