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 |
|---|---|---|---|---|
| Brushland Tinamou Nothoprocta cinerascens | Darwin's Nothura Nothura darwinii | 1 | 1 | 0 |
| Yellow-billed Pintail Anas georgica | Black-headed Duck Heteronetta atricapilla | 1 | 0 | 1 |
| Black-headed Duck Heteronetta atricapilla | Andean Duck Oxyura ferruginea | 1 | 0 | 1 |
| Helmeted Guineafowl Numida meleagris | Red Junglefowl Gallus gallus | 1 | 0 | 1 |
| Spot-winged Pigeon Patagioenas maculosa | Guira Cuckoo Guira guira | 1 | 0 | 1 |
| Picui Ground Dove Columbina picui | Rufous Hornero Furnarius rufus | 1 | 0 | 1 |
| Picui Ground Dove Columbina picui | Fork-tailed Flycatcher Tyrannus savana | 1 | 0 | 1 |
| Guira Cuckoo Guira guira | Greater Ani Crotophaga major | 1 | 0 | 1 |
| Guira Cuckoo Guira guira | Bobolink Dolichonyx oryzivorus | 1 | 0 | 1 |
| Red-tailed Comet Sappho sparganurus | White-sided Hillstar Oreotrochilus leucopleurus | 1 | 1 | 0 |
| White-sided Hillstar Oreotrochilus leucopleurus | Giant Hummingbird Patagona gigas | 1 | 0 | 1 |
| Plumbeous Rail Pardirallus sanguinolentus | American Moorhen Gallinula galeata | 1 | 1 | 0 |
| Black-necked Stilt Himantopus mexicanus | Magellanic Oystercatcher Haematopus leucopodus | 1 | 0 | 1 |
| Gentoo Penguin Pygoscelis papua | Magellanic Penguin Spheniscus magellanicus | 1 | 1 | 0 |
| Southern Giant-Petrel Macronectes giganteus | Southern Fulmar Fulmarus glacialoides | 1 | 0 | 1 |
| Soft-plumaged Petrel Pterodroma mollis | Antarctic Prion Pachyptila desolata | 1 | 1 | 0 |
| Antarctic Prion Pachyptila desolata | Manx Shearwater Puffinus puffinus | 1 | 1 | 0 |
| Variable Hawk Geranoaetus polyosoma | Black-chested Buzzard-Eagle Geranoaetus melanoleucus | 1 | 1 | 0 |
| Mountain Caracara Daptrius megalopterus | White-throated Caracara Daptrius albogularis | 1 | 1 | 0 |
| Scaly-headed Parrot Pionus maximiliani | Austral Parakeet Enicognathus ferrugineus | 1 | 0 | 1 |
| Turquoise-fronted Amazon Amazona aestiva | Blue-crowned Parakeet Thectocercus acuticaudatus | 1 | 0 | 1 |
| Burrowing Parakeet Cyanoliseus patagonus | Blue-crowned Parakeet Thectocercus acuticaudatus | 1 | 0 | 1 |
| Sandy Gallito Teledromas fuscus | Magellanic Tapaculo Scytalopus magellanicus | 1 | 1 | 0 |
| Rufous-banded Miner Geositta rufipennis | Scimitar-billed Woodcreeper Drymornis bridgesii | 1 | 1 | 0 |
| Firewood-gatherer Anumbius annumbi | Austral Canastero Asthenes anthoides | 1 | 1 | 0 |
| Cordilleran Canastero Asthenes modesta | Patagonian Canastero Pseudasthenes patagonica | 1 | 1 | 0 |
| Black-crowned Monjita Neoxolmis coronatus | Rusty-backed Monjita Neoxolmis rubetra | 1 | 0 | 1 |
| Chilean Swallow Tachycineta leucopyga | Brown-chested Martin Progne tapera | 1 | 1 | 0 |
| Swainson's Thrush Catharus ustulatus | Austral Thrush Turdus falcklandii | 1 | 1 | 0 |
| Hooded Siskin Spinus magellanicus | Black-chinned Siskin Spinus barbatus | 1 | 0 | 1 |
| Bobolink Dolichonyx oryzivorus | Screaming Cowbird Molothrus rufoaxillaris | 1 | 1 | 0 |