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 |
|---|---|---|---|---|
| Northern Shoveler Spatula clypeata | Pacific Black Duck Anas superciliosa | 4 | 2 | 2 |
| Wedge-tailed Shearwater Ardenna pacifica | Short-tailed Shearwater Ardenna tenuirostris | 4 | 2 | 2 |
| White-tailed Tropicbird Phaethon lepturus | Red-tailed Tropicbird Phaethon rubricauda | 3 | 1 | 2 |
| White Tern Gygis alba | Black Noddy Anous minutus | 2 | 1 | 1 |
| Brown Booby Sula leucogaster | Masked Booby Sula dactylatra | 2 | 1 | 1 |
| Polynesian Starling Aplonis tabuensis | Samoan Starling Aplonis atrifusca | 2 | 1 | 1 |
| Northern Shoveler Spatula clypeata | Rock Dove Columba livia | 1 | 1 | 0 |
| Pacific Black Duck Anas superciliosa | Rock Dove Columba livia | 1 | 0 | 1 |
| Many-coloured Fruit-Dove Ptilinopus perousii | Crimson-crowned Fruit-Dove Ptilinopus porphyraceus | 1 | 1 | 0 |
| Many-coloured Fruit-Dove Ptilinopus perousii | Pacific Imperial-Pigeon Ducula pacifica | 1 | 1 | 0 |
| Pacific Imperial-Pigeon Ducula pacifica | White-rumped Swiftlet Aerodramus spodiopygius | 1 | 1 | 0 |
| White-rumped Swiftlet Aerodramus spodiopygius | Australasian Swamphen Porphyrio melanotus | 1 | 1 | 0 |
| Buff-banded Rail Gallirallus philippensis | Australasian Swamphen Porphyrio melanotus | 1 | 0 | 1 |
| Buff-banded Rail Gallirallus philippensis | Spotless Crake Zapornia tabuensis | 1 | 0 | 1 |
| Australasian Swamphen Porphyrio melanotus | Spotless Crake Zapornia tabuensis | 1 | 0 | 1 |
| Australasian Swamphen Porphyrio melanotus | Pacific Golden Plover Pluvialis fulva | 1 | 0 | 1 |
| Pacific Golden Plover Pluvialis fulva | Masked Lapwing Vanellus miles | 1 | 0 | 1 |
| Bristle-thighed Curlew Numenius tahitiensis | Wandering Tattler Tringa incana | 1 | 1 | 0 |
| Bristle-thighed Curlew Numenius tahitiensis | Grey-tailed Tattler Tringa brevipes | 1 | 0 | 1 |
| Grey-tailed Tattler Tringa brevipes | Wandering Tattler Tringa incana | 1 | 0 | 1 |
| Wandering Tattler Tringa incana | Ruddy Turnstone Arenaria interpres | 1 | 1 | 0 |
| Sanderling Calidris alba | White Tern Gygis alba | 1 | 1 | 0 |
| Arctic Skua Stercorarius parasiticus | Black Noddy Anous minutus | 1 | 1 | 0 |
| White Tern Gygis alba | Brown Noddy Anous stolidus | 1 | 0 | 1 |
| Brown Noddy Anous stolidus | Blue-grey Noddy Anous ceruleus | 1 | 1 | 0 |
| Brown Noddy Anous stolidus | Black Noddy Anous minutus | 1 | 0 | 1 |
| Blue-grey Noddy Anous ceruleus | Bridled Tern Onychoprion anaethetus | 1 | 1 | 0 |
| Bridled Tern Onychoprion anaethetus | Great Crested Tern Thalasseus bergii | 1 | 1 | 0 |
| Sooty Tern Onychoprion fuscatus | Grey-backed Tern Onychoprion lunatus | 1 | 0 | 1 |
| Bridled Tern Onychoprion anaethetus | Grey-backed Tern Onychoprion lunatus | 1 | 0 | 1 |
| Grey-backed Tern Onychoprion lunatus | Great Crested Tern Thalasseus bergii | 1 | 1 | 0 |
| Grey-backed Tern Onychoprion lunatus | Black-naped Tern Sterna sumatrana | 1 | 0 | 1 |
| Great Crested Tern Thalasseus bergii | Polynesian Storm-Petrel Nesofregetta fuliginosa | 1 | 1 | 0 |
| Great Crested Tern Thalasseus bergii | Red-tailed Tropicbird Phaethon rubricauda | 1 | 0 | 1 |
| Red-tailed Tropicbird Phaethon rubricauda | White-necked Petrel Pterodroma cervicalis | 1 | 1 | 0 |
| Polynesian Storm-Petrel Nesofregetta fuliginosa | Herald Petrel Pterodroma heraldica | 1 | 0 | 1 |
| Herald Petrel Pterodroma heraldica | Black-winged Petrel Pterodroma nigripennis | 1 | 1 | 0 |
| Polynesian Storm-Petrel Nesofregetta fuliginosa | Mottled Petrel Pterodroma inexpectata | 1 | 0 | 1 |
| White-necked Petrel Pterodroma cervicalis | Collared Petrel Pterodroma brevipes | 1 | 1 | 0 |
| Collared Petrel Pterodroma brevipes | Tahiti Petrel Pseudobulweria rostrata | 1 | 1 | 0 |
| Collared Petrel Pterodroma brevipes | Wedge-tailed Shearwater Ardenna pacifica | 1 | 1 | 0 |
| Phoenix Petrel Pterodroma alba | Sooty Shearwater Ardenna grisea | 1 | 1 | 0 |
| Sooty Shearwater Ardenna grisea | Short-tailed Shearwater Ardenna tenuirostris | 1 | 1 | 0 |
| Phoenix Petrel Pterodroma alba | Tropical Shearwater Puffinus bailloni | 1 | 0 | 1 |
| Short-tailed Shearwater Ardenna tenuirostris | Lesser Frigatebird Fregata ariel | 1 | 0 | 1 |
| Tropical Shearwater Puffinus bailloni | Great Frigatebird Fregata minor | 1 | 0 | 1 |
| Samoan Myzomela Myzomela nigriventris | Eastern Wattled-Honeyeater Foulehaio carunculatus | 1 | 0 | 1 |
| Eastern Wattled-Honeyeater Foulehaio carunculatus | Polynesian Starling Aplonis tabuensis | 1 | 1 | 0 |
| Eastern Wattled-Honeyeater Foulehaio carunculatus | Fiji Shrikebill Clytorhynchus vitiensis | 1 | 0 | 1 |
| Fiji Shrikebill Clytorhynchus vitiensis | Polynesian Starling Aplonis tabuensis | 1 | 0 | 1 |