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 |
|---|---|---|---|---|
| Chestnut-throated Huet-huet Pteroptochos castaneus | Moustached Turca Pteroptochos megapodius | 9 | 1 | 8 |
| Black-throated Huet-huet Pteroptochos tarnii | White-throated Tapaculo Scelorchilus albicollis | 9 | 0 | 9 |
| Moustached Turca Pteroptochos megapodius | White-throated Tapaculo Scelorchilus albicollis | 8 | 5 | 3 |
| Ochre-flanked Tapaculo Eugralla paradoxa | Magellanic Tapaculo Scytalopus magellanicus | 7 | 4 | 3 |
| Chestnut-throated Huet-huet Pteroptochos castaneus | Black-throated Huet-huet Pteroptochos tarnii | 7 | 4 | 3 |
| Chucao Tapaculo Scelorchilus rubecula | Ochre-flanked Tapaculo Eugralla paradoxa | 6 | 1 | 5 |
| Hooded Siskin Spinus magellanicus | Yellow-rumped Siskin Spinus uropygialis | 5 | 3 | 2 |
| Chestnut-throated Huet-huet Pteroptochos castaneus | Ochre-flanked Tapaculo Eugralla paradoxa | 4 | 4 | 0 |
| White-throated Tapaculo Scelorchilus albicollis | Ochre-flanked Tapaculo Eugralla paradoxa | 4 | 0 | 4 |
| Burrowing Owl Athene cunicularia | Rufous-legged Owl Strix rufipes | 4 | 3 | 1 |
| Moustached Turca Pteroptochos megapodius | Chucao Tapaculo Scelorchilus rubecula | 3 | 0 | 3 |
| Ochre-flanked Tapaculo Eugralla paradoxa | Dusky Tapaculo Scytalopus fuscus | 3 | 1 | 2 |
| Chestnut-throated Huet-huet Pteroptochos castaneus | White-throated Tapaculo Scelorchilus albicollis | 3 | 3 | 0 |
| Black-throated Huet-huet Pteroptochos tarnii | Moustached Turca Pteroptochos megapodius | 3 | 1 | 2 |
| Wilson's Storm-Petrel Oceanites oceanicus | Elliot's Storm-Petrel Oceanites gracilis | 2 | 0 | 2 |
| White-throated Tapaculo Scelorchilus albicollis | Chucao Tapaculo Scelorchilus rubecula | 2 | 0 | 2 |
| White-throated Tapaculo Scelorchilus albicollis | Dusky Tapaculo Scytalopus fuscus | 2 | 0 | 2 |
| Chucao Tapaculo Scelorchilus rubecula | Magellanic Tapaculo Scytalopus magellanicus | 2 | 2 | 0 |
| Cinnamon-bellied Ground-Tyrant Muscisaxicola capistratus | Black-fronted Ground-Tyrant Muscisaxicola frontalis | 2 | 2 | 0 |
| Thick-billed Siskin Spinus crassirostris | Hooded Siskin Spinus magellanicus | 2 | 1 | 1 |
| Lesser Horned Owl Bubo magellanicus | Rufous-legged Owl Strix rufipes | 2 | 2 | 0 |
| Hooded Siskin Spinus magellanicus | Black-chinned Siskin Spinus barbatus | 2 | 2 | 0 |
| Yellow-billed Pintail Anas georgica | Yellow-billed Teal Anas flavirostris | 2 | 1 | 1 |
| Chilean Flamingo Phoenicopterus chilensis | Andean Flamingo Phoenicoparrus andinus | 2 | 2 | 0 |
| Greenish Yellow-Finch Sicalis olivascens | Grassland Yellow-Finch Sicalis luteola | 2 | 1 | 1 |
| Grey Gull Leucophaeus modestus | Dolphin Gull Leucophaeus scoresbii | 1 | 1 | 0 |
| White-tailed Tropicbird Phaethon lepturus | Red-tailed Tropicbird Phaethon rubricauda | 1 | 0 | 1 |
| Humboldt Penguin Spheniscus humboldti | Magellanic Penguin Spheniscus magellanicus | 1 | 0 | 1 |
| Southern Royal Albatross Diomedea epomophora | Snowy Albatross Diomedea exulans | 1 | 1 | 0 |
| Sooty Albatross Phoebetria fusca | Light-mantled Albatross Phoebetria palpebrata | 1 | 0 | 1 |
| Grey-headed Albatross Thalassarche chrysostoma | Buller's Albatross Thalassarche bulleri | 1 | 0 | 1 |
| Grey-headed Albatross Thalassarche chrysostoma | Black-browed Albatross Thalassarche melanophris | 1 | 0 | 1 |
| Buller's Albatross Thalassarche bulleri | White-capped Albatross Thalassarche cauta | 1 | 0 | 1 |
| Pincoya Storm-Petrel Oceanites pincoyae | Elliot's Storm-Petrel Oceanites gracilis | 1 | 1 | 0 |
| Juan Fernandez Petrel Pterodroma externa | Stejneger's Petrel Pterodroma longirostris | 1 | 0 | 1 |
| Stejneger's Petrel Pterodroma longirostris | Blue Petrel Halobaena caerulea | 1 | 1 | 0 |
| Antarctic Prion Pachyptila desolata | Slender-billed Prion Pachyptila belcheri | 1 | 1 | 0 |
| Great Shearwater Ardenna gravis | Buller's Shearwater Ardenna bulleri | 1 | 0 | 1 |
| Subantarctic Shearwater Puffinus elegans | Peruvian Diving-Petrel Pelecanoides garnotii | 1 | 1 | 0 |
| Red-legged Cormorant Poikilocarbo gaimardi | Magellanic Cormorant Leucocarbo magellanicus | 1 | 0 | 1 |
| Little Blue Heron Egretta caerulea | Snowy Egret Egretta thula | 1 | 1 | 0 |
| Black-faced Ibis Theristicus melanopis | Andean Ibis Theristicus branickii | 1 | 1 | 0 |
| Harris's Hawk Parabuteo unicinctus | Black-chested Buzzard-Eagle Geranoaetus melanoleucus | 1 | 1 | 0 |
| Lesser Horned Owl Bubo magellanicus | Burrowing Owl Athene cunicularia | 1 | 0 | 1 |
| Chimango Caracara Daptrius chimango | White-throated Caracara Daptrius albogularis | 1 | 0 | 1 |
| Chestnut-throated Huet-huet Pteroptochos castaneus | Chucao Tapaculo Scelorchilus rubecula | 1 | 1 | 0 |
| Moustached Turca Pteroptochos megapodius | Dusky Tapaculo Scytalopus fuscus | 1 | 0 | 1 |
| Moustached Turca Pteroptochos megapodius | Magellanic Tapaculo Scytalopus magellanicus | 1 | 0 | 1 |
| Dusky Tapaculo Scytalopus fuscus | Magellanic Tapaculo Scytalopus magellanicus | 1 | 1 | 0 |
| Common Miner Geositta cunicularia | Rufous-banded Miner Geositta rufipennis | 1 | 1 | 0 |
| Greyish Miner Geositta maritima | White-throated Treerunner Pygarrhichas albogularis | 1 | 1 | 0 |
| White-throated Earthcreeper Upucerthia albigula | Buff-breasted Earthcreeper Upucerthia validirostris | 1 | 0 | 1 |
| Buff-winged Cinclodes Cinclodes fuscus | Grey-flanked Cinclodes Cinclodes oustaleti | 1 | 1 | 0 |
| Cream-winged Cinclodes Cinclodes albiventris | White-winged Cinclodes Cinclodes atacamensis | 1 | 0 | 1 |
| Grey-flanked Cinclodes Cinclodes oustaleti | Seaside Cinclodes Cinclodes nigrofumosus | 1 | 1 | 0 |
| White-winged Cinclodes Cinclodes atacamensis | Dark-bellied Cinclodes Cinclodes patagonicus | 1 | 0 | 1 |
| White-winged Cinclodes Cinclodes atacamensis | Seaside Cinclodes Cinclodes nigrofumosus | 1 | 1 | 0 |
| Plain-mantled Tit-Spinetail Leptasthenura aegithaloides | Streaked Tit-Spinetail Leptasthenura striata | 1 | 1 | 0 |
| Creamy-breasted Canastero Asthenes dorbignyi | Sharp-billed Canastero Asthenes pyrrholeuca | 1 | 0 | 1 |
| Austral Canastero Asthenes anthoides | Cordilleran Canastero Asthenes modesta | 1 | 0 | 1 |
| Sharp-billed Canastero Asthenes pyrrholeuca | Dusky-tailed Canastero Pseudasthenes humicola | 1 | 0 | 1 |
| Tufted Tit-Tyrant Anairetes parulus | Juan Fernandez Tit-Tyrant Anairetes fernandezianus | 1 | 0 | 1 |
| Austral Negrito Lessonia rufa | Andean Negrito Lessonia oreas | 1 | 0 | 1 |
| Andean Negrito Lessonia oreas | Spectacled Tyrant Hymenops perspicillatus | 1 | 0 | 1 |
| Spot-billed Ground-Tyrant Muscisaxicola maculirostris | Puna Ground-Tyrant Muscisaxicola juninensis | 1 | 1 | 0 |
| Ochre-naped Ground-Tyrant Muscisaxicola flavinucha | Rufous-naped Ground-Tyrant Muscisaxicola rufivertex | 1 | 0 | 1 |
| White-tailed Shrike-Tyrant Agriornis albicauda | Great Shrike-Tyrant Agriornis lividus | 1 | 1 | 0 |
| Blue-and-white Swallow Pygochelidon cyanoleuca | Andean Swallow Orochelidon andecola | 1 | 0 | 1 |
| Peruvian Pipit Anthus peruvianus | Hellmayr's Pipit Anthus hellmayri | 1 | 1 | 0 |
| Thick-billed Siskin Spinus crassirostris | Black-chinned Siskin Spinus barbatus | 1 | 1 | 0 |
| Blue-and-yellow Tanager Rauenia bonariensis | Tamarugo Conebill Conirostrum tamarugense | 1 | 1 | 0 |
| Plumbeous Sierra Finch Geospizopsis unicolor | Ash-breasted Sierra Finch Geospizopsis plebejus | 1 | 0 | 1 |
| Bright-rumped Yellow-Finch Sicalis uropygialis | Greater Yellow-Finch Sicalis auriventris | 1 | 1 | 0 |
| Bright-rumped Yellow-Finch Sicalis uropygialis | Patagonian Yellow-Finch Sicalis lebruni | 1 | 1 | 0 |
| Greater Yellow-Finch Sicalis auriventris | Patagonian Yellow-Finch Sicalis lebruni | 1 | 0 | 1 |
| Greater Yellow-Finch Sicalis auriventris | Saffron Finch Sicalis flaveola | 1 | 1 | 0 |
| Ornate Tinamou Nothoprocta ornata | Chilean Tinamou Nothoprocta perdicaria | 1 | 1 | 0 |
| Patagonian Yellow-Finch Sicalis lebruni | Grassland Yellow-Finch Sicalis luteola | 1 | 1 | 0 |
| Chilean Tinamou Nothoprocta perdicaria | Elegant Crested-Tinamou Eudromia elegans | 1 | 1 | 0 |
| Upland Goose Chloephaga picta | Ruddy-headed Goose Chloephaga rubidiceps | 1 | 1 | 0 |
| Flying Steamer-Duck Tachyeres patachonicus | Flightless Steamer-Duck Tachyeres pteneres | 1 | 1 | 0 |
| Silver Teal Spatula versicolor | Puna Teal Spatula puna | 1 | 1 | 0 |
| Black-headed Duck Heteronetta atricapilla | Andean Duck Oxyura ferruginea | 1 | 0 | 1 |
| Andean Flamingo Phoenicoparrus andinus | James's Flamingo Phoenicoparrus jamesi | 1 | 0 | 1 |
| Pied-billed Grebe Podilymbus podiceps | Great Grebe Podiceps major | 1 | 0 | 1 |
| Chilean Pigeon Patagioenas araucana | Kelp Gull Larus dominicanus | 1 | 0 | 1 |
| Croaking Ground Dove Columbina cruziana | Golden-spotted Ground Dove Metriopelia aymara | 1 | 0 | 1 |
| Black-winged Ground Dove Metriopelia melanoptera | Golden-spotted Ground Dove Metriopelia aymara | 1 | 1 | 0 |
| Black-winged Ground Dove Metriopelia melanoptera | West Peruvian Dove Zenaida meloda | 1 | 0 | 1 |
| Golden-spotted Ground Dove Metriopelia aymara | West Peruvian Dove Zenaida meloda | 1 | 1 | 0 |
| Giant Hummingbird Patagona gigas | Oasis Hummingbird Rhodopis vesper | 1 | 0 | 1 |
| Oasis Hummingbird Rhodopis vesper | Chilean Woodstar Eulidia yarrellii | 1 | 1 | 0 |
| Austral Rail Rallus antarcticus | Plumbeous Rail Pardirallus sanguinolentus | 1 | 0 | 1 |
| Red-gartered Coot Fulica armillata | White-winged Coot Fulica leucoptera | 1 | 0 | 1 |
| Grey-breasted Seedsnipe Thinocorus orbignyianus | Least Seedsnipe Thinocorus rumicivorus | 1 | 0 | 1 |
| Fuegian Snipe Gallinago stricklandii | Magellanic Snipe Gallinago magellanica | 1 | 0 | 1 |
| Stilt Sandpiper Calidris himantopus | Baird's Sandpiper Calidris bairdii | 1 | 1 | 0 |
| Western Sandpiper Calidris mauri | Semipalmated Sandpiper Calidris pusilla | 1 | 0 | 1 |
| Long-tailed Skua Stercorarius longicaudus | Arctic Skua Stercorarius parasiticus | 1 | 1 | 0 |
| Chilean Skua Stercorarius chilensis | South Polar Skua Stercorarius maccormicki | 1 | 1 | 0 |
| Swallow-tailed Gull Creagrus furcatus | Andean Gull Chroicocephalus serranus | 1 | 0 | 1 |
| Brown-hooded Gull Chroicocephalus maculipennis | Grey-hooded Gull Chroicocephalus cirrocephalus | 1 | 1 | 0 |