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 | 4 | 2 | 2 |
| Red-legged Partridge Alectoris rufa | Rock Partridge Alectoris graeca | 4 | 0 | 4 |
| Whimbrel Numenius phaeopus | Eurasian Curlew Numenius arquata | 4 | 1 | 3 |
| Black-winged Pratincole Glareola nordmanni | Collared Pratincole Glareola pratincola | 4 | 2 | 2 |
| Marsh Warbler Acrocephalus palustris | Common Reed Warbler Acrocephalus scirpaceus | 4 | 4 | 0 |
| Tufted Duck Aythya fuligula | Greater Scaup Aythya marila | 3 | 1 | 2 |
| Siberian Sand Plover Anarhynchus mongolus | Greater Sand Plover Anarhynchus leschenaultii | 3 | 2 | 1 |
| Yelkouan Shearwater Puffinus yelkouan | Balearic Shearwater Puffinus mauretanicus | 3 | 3 | 0 |
| Melodious Warbler Hippolais polyglotta | Common Reed Warbler Acrocephalus scirpaceus | 3 | 1 | 2 |
| House Sparrow Passer domesticus | Spanish Sparrow Passer hispaniolensis | 3 | 2 | 1 |
| Tree Pipit Anthus trivialis | Rock Pipit Anthus petrosus | 3 | 2 | 1 |
| Taiga Bean Goose Anser fabalis | Tundra Bean Goose Anser serrirostris | 2 | 0 | 2 |
| Brent Goose Branta bernicla | Barnacle Goose Branta leucopsis | 2 | 2 | 0 |
| Bewick's Swan Cygnus columbianus | Whooper Swan Cygnus cygnus | 2 | 2 | 0 |
| Ferruginous Duck Aythya nyroca | Greater Scaup Aythya marila | 2 | 0 | 2 |
| Greater Scaup Aythya marila | Lesser Scaup Aythya affinis | 2 | 0 | 2 |
| Grey Partridge Perdix perdix | Rock Partridge Alectoris graeca | 2 | 1 | 1 |
| Common Swift Apus apus | Pallid Swift Apus pallidus | 2 | 0 | 2 |
| Common Sandpiper Actitis hypoleucos | Green Sandpiper Tringa ochropus | 2 | 1 | 1 |
| Common Redshank Tringa totanus | Common Greenshank Tringa nebularia | 2 | 2 | 0 |
| Wood Sandpiper Tringa glareola | Lesser Yellowlegs Tringa flavipes | 2 | 0 | 2 |
| Curlew Sandpiper Calidris ferruginea | Dunlin Calidris alpina | 2 | 0 | 2 |
| Black-headed Gull Chroicocephalus ridibundus | Mediterranean Gull Ichthyaetus melanocephalus | 2 | 1 | 1 |
| Yellow-legged Gull Larus michahellis | Great Black-backed Gull Larus marinus | 2 | 0 | 2 |
| European Storm-Petrel Hydrobates pelagicus | Leach's Storm-Petrel Hydrobates leucorhous | 2 | 1 | 1 |
| Great Shearwater Ardenna gravis | Manx Shearwater Puffinus puffinus | 2 | 2 | 0 |
| Manx Shearwater Puffinus puffinus | Yelkouan Shearwater Puffinus yelkouan | 2 | 1 | 1 |
| Short-toed Eagle Circaetus gallicus | Western Marsh Harrier Circus aeruginosus | 2 | 2 | 0 |
| Western Marsh Harrier Circus aeruginosus | Hen Harrier Circus cyaneus | 2 | 0 | 2 |
| White-tailed Eagle Haliaeetus albicilla | Common Buzzard Buteo buteo | 2 | 1 | 1 |
| Eurasian Green Woodpecker Picus viridis | Iberian Green Woodpecker Picus sharpei | 2 | 0 | 2 |
| Greater Short-toed Lark Calandrella brachydactyla | Eurasian Skylark Alauda arvensis | 2 | 1 | 1 |
| Melodious Warbler Hippolais polyglotta | Marsh Warbler Acrocephalus palustris | 2 | 0 | 2 |
| Wood Warbler Phylloscopus sibilatrix | Willow Warbler Phylloscopus trochilus | 2 | 2 | 0 |
| Western Bonelli's Warbler Phylloscopus bonelli | Willow Warbler Phylloscopus trochilus | 2 | 2 | 0 |
| Yellow-browed Warbler Phylloscopus inornatus | Hume's Warbler Phylloscopus humei | 2 | 1 | 1 |
| Western Subalpine Warbler Curruca iberiae | Eastern Subalpine Warbler Curruca cantillans | 2 | 0 | 2 |
| House Sparrow Passer domesticus | Italian Sparrow Passer italiae | 2 | 0 | 2 |
| Spanish Sparrow Passer hispaniolensis | Eurasian Tree Sparrow Passer montanus | 2 | 1 | 1 |
| European Serin Serinus serinus | Eurasian Siskin Spinus spinus | 2 | 0 | 2 |
| Rock Bunting Emberiza cia | Ortolan Bunting Emberiza hortulana | 2 | 2 | 0 |
| Greater White-fronted Goose Anser albifrons | Lesser White-fronted Goose Anser erythropus | 1 | 1 | 0 |
| Greylag Goose Anser anser | Taiga Bean Goose Anser fabalis | 1 | 0 | 1 |
| Greater White-fronted Goose Anser albifrons | Taiga Bean Goose Anser fabalis | 1 | 0 | 1 |
| Taiga Bean Goose Anser fabalis | Pink-footed Goose Anser brachyrhynchus | 1 | 1 | 0 |
| Brent Goose Branta bernicla | Common Swift Apus apus | 1 | 1 | 0 |
| Brent Goose Branta bernicla | Eurasian Coot Fulica atra | 1 | 1 | 0 |
| Baikal Teal Sibirionetta formosa | Northern Shoveler Spatula clypeata | 1 | 1 | 0 |
| Baikal Teal Sibirionetta formosa | Garganey Spatula querquedula | 1 | 0 | 1 |
| Gadwall Mareca strepera | Eurasian Wigeon Mareca penelope | 1 | 1 | 0 |
| Eurasian Wigeon Mareca penelope | American Wigeon Mareca americana | 1 | 1 | 0 |
| Mallard Anas platyrhynchos | Marbled Duck Marmaronetta angustirostris | 1 | 1 | 0 |
| Mallard Anas platyrhynchos | American Black Duck Anas rubripes | 1 | 0 | 1 |
| Northern Pintail Anas acuta | Eurasian/Green-winged Teal Anas crecca | 1 | 1 | 0 |
| Red-crested Pochard Netta rufina | Common Pochard Aythya ferina | 1 | 0 | 1 |
| Common Pochard Aythya ferina | Ring-necked Duck Aythya collaris | 1 | 0 | 1 |
| Common Pochard Aythya ferina | Tufted Duck Aythya fuligula | 1 | 0 | 1 |
| Ferruginous Duck Aythya nyroca | Tufted Duck Aythya fuligula | 1 | 0 | 1 |
| Common Eider Somateria mollissima | Common Scoter Melanitta nigra | 1 | 1 | 0 |
| Common Eider Somateria mollissima | European Bee-eater Merops apiaster | 1 | 1 | 0 |
| Surf Scoter Melanitta perspicillata | Common Scoter Melanitta nigra | 1 | 1 | 0 |
| Velvet Scoter Melanitta fusca | Common Scoter Melanitta nigra | 1 | 1 | 0 |
| Velvet Scoter Melanitta fusca | Black Scoter Melanitta americana | 1 | 0 | 1 |
| Black Scoter Melanitta americana | Bufflehead Bucephala albeola | 1 | 1 | 0 |
| Long-tailed Duck Clangula hyemalis | Smew Mergellus albellus | 1 | 1 | 0 |
| Bufflehead Bucephala albeola | Common Goldeneye Bucephala clangula | 1 | 1 | 0 |
| Common Goldeneye Bucephala clangula | Cory's Shearwater Calonectris diomedea | 1 | 1 | 0 |
| Common Goldeneye Bucephala clangula | Goosander Mergus merganser | 1 | 0 | 1 |
| Hazel Grouse Tetrastes bonasia | Rock Ptarmigan Lagopus muta | 1 | 1 | 0 |
| Western Capercaillie Tetrao urogallus | Common Quail Coturnix coturnix | 1 | 1 | 0 |
| Western Capercaillie Tetrao urogallus | Hen Harrier Circus cyaneus | 1 | 1 | 0 |
| Grey Partridge Perdix perdix | Common Quail Coturnix coturnix | 1 | 1 | 0 |
| Slavonian Grebe Podiceps auritus | Red-necked Grebe Podiceps grisegena | 1 | 1 | 0 |
| Red-necked Grebe Podiceps grisegena | Grey-headed Woodpecker Picus canus | 1 | 1 | 0 |
| Great Crested Grebe Podiceps cristatus | Black-necked Grebe Podiceps nigricollis | 1 | 1 | 0 |
| Rock Dove Columba livia | European Turtle Dove Streptopelia turtur | 1 | 0 | 1 |
| Common Cuckoo Cuculus canorus | Eurasian Nightjar Caprimulgus europaeus | 1 | 1 | 0 |
| Common Swift Apus apus | Barn Swallow Hirundo rustica | 1 | 1 | 0 |
| Common Swift Apus apus | Song Thrush Turdus philomelos | 1 | 1 | 0 |
| Water Rail Rallus aquaticus | Ruff Calidris pugnax | 1 | 1 | 0 |
| Common Moorhen Gallinula chloropus | Western Swamphen Porphyrio porphyrio | 1 | 0 | 1 |
| Eurasian Coot Fulica atra | Western Swamphen Porphyrio porphyrio | 1 | 0 | 1 |
| Stone-curlew Burhinus oedicnemus | Citril Finch Carduelis citrinella | 1 | 1 | 0 |
| Black-winged Stilt Himantopus himantopus | Pied Avocet Recurvirostra avosetta | 1 | 1 | 0 |
| Grey Plover Pluvialis squatarola | Common Ringed Plover Charadrius hiaticula | 1 | 1 | 0 |
| Grey Plover Pluvialis squatarola | Green Sandpiper Tringa ochropus | 1 | 1 | 0 |
| Grey Plover Pluvialis squatarola | Curlew Sandpiper Calidris ferruginea | 1 | 1 | 0 |
| Grey Plover Pluvialis squatarola | European Golden Plover Pluvialis apricaria | 1 | 0 | 1 |
| Common Ringed Plover Charadrius hiaticula | Kentish Plover Anarhynchus alexandrinus | 1 | 1 | 0 |
| Common Ringed Plover Charadrius hiaticula | Semipalmated Plover Charadrius semipalmatus | 1 | 0 | 1 |
| Common Ringed Plover Charadrius hiaticula | Little Ringed Plover Thinornis dubius | 1 | 0 | 1 |
| Short-billed Dowitcher Limnodromus griseus | Long-billed Dowitcher Limnodromus scolopaceus | 1 | 1 | 0 |
| Common Snipe Gallinago gallinago | Eurasian Nuthatch Sitta europaea | 1 | 1 | 0 |
| Common Snipe Gallinago gallinago | Common Sandpiper Actitis hypoleucos | 1 | 0 | 1 |
| Spotted Sandpiper Actitis macularius | Grey-tailed Tattler Tringa brevipes | 1 | 1 | 0 |
| Green Sandpiper Tringa ochropus | Ruddy Turnstone Arenaria interpres | 1 | 1 | 0 |
| Common Greenshank Tringa nebularia | Western Subalpine Warbler Curruca iberiae | 1 | 1 | 0 |
| Red Knot Calidris canutus | Sanderling Calidris alba | 1 | 1 | 0 |
| Common Snipe Gallinago gallinago | Ruff Calidris pugnax | 1 | 0 | 1 |
| Ruff Calidris pugnax | Eurasian Wryneck Jynx torquilla | 1 | 1 | 0 |
| Eurasian Oystercatcher Haematopus ostralegus | Curlew Sandpiper Calidris ferruginea | 1 | 0 | 1 |
| Red Knot Calidris canutus | Curlew Sandpiper Calidris ferruginea | 1 | 0 | 1 |
| Curlew Sandpiper Calidris ferruginea | Little Stint Calidris minuta | 1 | 1 | 0 |
| Long-toed Stint Calidris subminuta | Buff-breasted Sandpiper Calidris subruficollis | 1 | 1 | 0 |
| Sanderling Calidris alba | Little Stint Calidris minuta | 1 | 1 | 0 |
| Red Knot Calidris canutus | Dunlin Calidris alpina | 1 | 0 | 1 |
| Western Sandpiper Calidris mauri | Cream-coloured Courser Cursorius cursor | 1 | 1 | 0 |
| Oriental Pratincole Glareola maldivarum | Collared Pratincole Glareola pratincola | 1 | 0 | 1 |
| Arctic Skua Stercorarius parasiticus | Common Gull Larus canus | 1 | 1 | 0 |
| Black-winged Pratincole Glareola nordmanni | Great Skua Stercorarius skua | 1 | 0 | 1 |
| Great Skua Stercorarius skua | South Polar Skua Stercorarius maccormicki | 1 | 0 | 1 |
| Little Gull Hydrocoloeus minutus | Black-legged Kittiwake Rissa tridactyla | 1 | 0 | 1 |
| Black-legged Kittiwake Rissa tridactyla | Black-headed Gull Chroicocephalus ridibundus | 1 | 0 | 1 |
| Black-headed Gull Chroicocephalus ridibundus | Audouin's Gull Ichthyaetus audouinii | 1 | 0 | 1 |
| Audouin's Gull Ichthyaetus audouinii | Common Gull Larus canus | 1 | 0 | 1 |
| Common Gull Larus canus | Yellow-legged Gull Larus michahellis | 1 | 1 | 0 |
| Caspian Gull Larus cachinnans | Herring Gull Larus argentatus | 1 | 1 | 0 |
| Black-headed Gull Chroicocephalus ridibundus | Herring Gull Larus argentatus | 1 | 0 | 1 |
| Herring Gull Larus argentatus | Yellow-legged Gull Larus michahellis | 1 | 1 | 0 |
| Herring Gull Larus argentatus | Common Grasshopper Warbler Locustella naevia | 1 | 1 | 0 |
| Glaucous Gull Larus hyperboreus | Iceland Gull Larus glaucoides | 1 | 0 | 1 |
| Little Tern Sternula albifrons | Common Tern Sterna hirundo | 1 | 1 | 0 |
| Gull-billed Tern Gelochelidon nilotica | Black Kite Milvus migrans | 1 | 1 | 0 |
| Little Tern Sternula albifrons | Whiskered Tern Chlidonias hybrida | 1 | 0 | 1 |
| Whiskered Tern Chlidonias hybrida | Common Tern Sterna hirundo | 1 | 1 | 0 |
| Common Tern Sterna hirundo | Sandwich Tern Thalasseus sandvicensis | 1 | 1 | 0 |
| Common Tern Sterna hirundo | Roseate Tern Sterna dougallii | 1 | 0 | 1 |
| Roseate Tern Sterna dougallii | Common Reed Warbler Acrocephalus scirpaceus | 1 | 1 | 0 |
| Elegant Tern Thalasseus elegans | Lesser Crested Tern Thalasseus bengalensis | 1 | 1 | 0 |
| Elegant Tern Thalasseus elegans | Royal Tern Thalasseus maximus | 1 | 1 | 0 |
| European Storm-Petrel Hydrobates pelagicus | Black-crowned Night Heron Nycticorax nycticorax | 1 | 1 | 0 |
| Leach's Storm-Petrel Hydrobates leucorhous | Cory's Shearwater Calonectris diomedea | 1 | 1 | 0 |
| Northern Fulmar Fulmarus glacialis | Sooty Shearwater Ardenna grisea | 1 | 1 | 0 |
| Sanderling Calidris alba | Cory's Shearwater Calonectris diomedea | 1 | 0 | 1 |
| Slender-billed Gull Chroicocephalus genei | Sooty Shearwater Ardenna grisea | 1 | 0 | 1 |
| Cory's Shearwater Calonectris diomedea | Sooty Shearwater Ardenna grisea | 1 | 0 | 1 |
| Sooty Shearwater Ardenna grisea | Balearic Shearwater Puffinus mauretanicus | 1 | 1 | 0 |
| Sooty Shearwater Ardenna grisea | Short-tailed Shearwater Ardenna tenuirostris | 1 | 0 | 1 |
| Short-tailed Shearwater Ardenna tenuirostris | Balearic Shearwater Puffinus mauretanicus | 1 | 1 | 0 |
| Common Sandpiper Actitis hypoleucos | Yelkouan Shearwater Puffinus yelkouan | 1 | 0 | 1 |
| Great Shearwater Ardenna gravis | Yelkouan Shearwater Puffinus yelkouan | 1 | 0 | 1 |
| Yelkouan Shearwater Puffinus yelkouan | Zitting Cisticola Cisticola juncidis | 1 | 1 | 0 |
| Northern Gannet Morus bassanus | European Shag Gulosus aristotelis | 1 | 0 | 1 |
| Great White Pelican Pelecanus onocrotalus | Dalmatian Pelican Pelecanus crispus | 1 | 0 | 1 |
| Eurasian Bittern Botaurus stellaris | Little Bittern Botaurus minutus | 1 | 0 | 1 |
| Black-crowned Night Heron Nycticorax nycticorax | Western Reef-Heron Egretta gularis | 1 | 0 | 1 |
| Little Egret Egretta garzetta | Western Reef-Heron Egretta gularis | 1 | 0 | 1 |
| Western Reef-Heron Egretta gularis | Great White Egret Ardea alba | 1 | 1 | 0 |
| Western Cattle-Egret Ardea ibis | Eurasian Spoonbill Platalea leucorodia | 1 | 0 | 1 |
| Glossy Ibis Plegadis falcinellus | Eurasian Spoonbill Platalea leucorodia | 1 | 0 | 1 |
| Black-winged Kite Elanus caeruleus | Egyptian Vulture Neophron percnopterus | 1 | 1 | 0 |
| Little Stint Calidris minuta | European Honey-buzzard Pernis apivorus | 1 | 0 | 1 |
| European Honey-buzzard Pernis apivorus | Black Vulture Aegypius monachus | 1 | 0 | 1 |
| European Honey-buzzard Pernis apivorus | Griffon Vulture Gyps fulvus | 1 | 0 | 1 |
| Short-toed Eagle Circaetus gallicus | Eurasian Sparrowhawk Accipiter nisus | 1 | 1 | 0 |
| Lesser Spotted Eagle Clanga pomarina | Greater Spotted Eagle Clanga clanga | 1 | 0 | 1 |
| Imperial Eagle Aquila heliaca | Western Marsh Harrier Circus aeruginosus | 1 | 1 | 0 |
| Bonelli's Eagle Aquila fasciata | Hen Harrier Circus cyaneus | 1 | 1 | 0 |
| Golden Eagle Aquila chrysaetos | Western Marsh Harrier Circus aeruginosus | 1 | 0 | 1 |
| Hen Harrier Circus cyaneus | Montagu's Harrier Circus pygargus | 1 | 1 | 0 |
| Pallid Harrier Circus macrourus | Montagu's Harrier Circus pygargus | 1 | 1 | 0 |
| Red Kite Milvus milvus | Black Kite Milvus migrans | 1 | 1 | 0 |
| Rough-legged Buzzard Buteo lagopus | Common Buzzard Buteo buteo | 1 | 1 | 0 |
| American Barn Owl Tyto furcata | Tawny Owl Strix aluco | 1 | 1 | 0 |
| Eurasian Scops Owl Otus scops | Tawny Owl Strix aluco | 1 | 1 | 0 |
| Eurasian Scops Owl Otus scops | Little Owl Athene noctua | 1 | 0 | 1 |
| Caspian Gull Larus cachinnans | Eurasian Wryneck Jynx torquilla | 1 | 0 | 1 |
| Grey-headed Woodpecker Picus canus | Iberian Green Woodpecker Picus sharpei | 1 | 0 | 1 |
| Lesser Kestrel Falco naumanni | Common Kestrel Falco tinnunculus | 1 | 1 | 0 |
| Lesser Kestrel Falco naumanni | Saker Falcon Falco cherrug | 1 | 0 | 1 |
| Eurasian Hobby Falco subbuteo | Saker Falcon Falco cherrug | 1 | 0 | 1 |
| Isabelline Shrike Lanius isabellinus | Brown Shrike Lanius cristatus | 1 | 1 | 0 |
| Lesser Grey Shrike Lanius minor | Rock Sparrow Petronia petronia | 1 | 1 | 0 |
| Woodchat Shrike Lanius senator | Hawfinch Coccothraustes coccothraustes | 1 | 1 | 0 |
| Northern Gannet Morus bassanus | Eurasian Jay Garrulus glandarius | 1 | 0 | 1 |
| Eurasian Jackdaw Coloeus monedula | Barn Swallow Hirundo rustica | 1 | 1 | 0 |
| Eurasian Jackdaw Coloeus monedula | Common Chiffchaff Phylloscopus collybita | 1 | 1 | 0 |
| Collared Dove Streptopelia decaocto | Rook Corvus frugilegus | 1 | 0 | 1 |
| Rook Corvus frugilegus | Carrion Crow Corvus corone | 1 | 0 | 1 |
| Coal Tit Periparus ater | Marsh Tit Poecile palustris | 1 | 1 | 0 |
| Marsh Tit Poecile palustris | Willow Tit Poecile montanus | 1 | 0 | 1 |
| Eurasian Blue Tit Cyanistes caeruleus | Great Tit Parus major | 1 | 1 | 0 |
| Eurasian Blue Tit Cyanistes caeruleus | Song Thrush Turdus philomelos | 1 | 1 | 0 |
| Eurasian Blue Tit Cyanistes caeruleus | European Goldfinch Carduelis carduelis | 1 | 1 | 0 |
| Eurasian Penduline Tit Remiz pendulinus | Calandra Lark Melanocorypha calandra | 1 | 1 | 0 |
| Mediterranean Short-toed Lark Alaudala rufescens | Siberian Stonechat Saxicola maurus | 1 | 1 | 0 |
| Woodlark Lullula arborea | Eurasian Skylark Alauda arvensis | 1 | 0 | 1 |
| Booted Warbler Iduna caligata | Garden Warbler Sylvia borin | 1 | 1 | 0 |
| Eurasian Wryneck Jynx torquilla | Melodious Warbler Hippolais polyglotta | 1 | 0 | 1 |
| Melodious Warbler Hippolais polyglotta | Spanish Sparrow Passer hispaniolensis | 1 | 1 | 0 |
| Melodious Warbler Hippolais polyglotta | Hawfinch Coccothraustes coccothraustes | 1 | 1 | 0 |
| Eurasian Woodcock Scolopax rusticola | Aquatic Warbler Acrocephalus paludicola | 1 | 0 | 1 |
| Zitting Cisticola Cisticola juncidis | Aquatic Warbler Acrocephalus paludicola | 1 | 0 | 1 |
| Melodious Warbler Hippolais polyglotta | Aquatic Warbler Acrocephalus paludicola | 1 | 0 | 1 |
| Common Tern Sterna hirundo | Moustached Warbler Acrocephalus melanopogon | 1 | 0 | 1 |
| Moustached Warbler Acrocephalus melanopogon | European Stonechat Saxicola rubicola | 1 | 1 | 0 |
| Melodious Warbler Hippolais polyglotta | Blyth's Reed Warbler Acrocephalus dumetorum | 1 | 0 | 1 |
| Common Reed Warbler Acrocephalus scirpaceus | Great Reed Warbler Acrocephalus arundinaceus | 1 | 1 | 0 |
| Pallas's Grasshopper Warbler Helopsaltes certhiola | Common Grasshopper Warbler Locustella naevia | 1 | 1 | 0 |
| Eurasian Pygmy-Owl Glaucidium passerinum | River Warbler Locustella fluviatilis | 1 | 0 | 1 |
| Zitting Cisticola Cisticola juncidis | Common Grasshopper Warbler Locustella naevia | 1 | 0 | 1 |
| Common Reed Warbler Acrocephalus scirpaceus | Common Grasshopper Warbler Locustella naevia | 1 | 0 | 1 |
| Savi's Warbler Locustella luscinioides | Common Grasshopper Warbler Locustella naevia | 1 | 0 | 1 |
| Sand Martin Riparia riparia | Eurasian Nuthatch Sitta europaea | 1 | 1 | 0 |
| Barn Swallow Hirundo rustica | Common Linnet Linaria cannabina | 1 | 1 | 0 |
| Wood Warbler Phylloscopus sibilatrix | Western Bonelli's Warbler Phylloscopus bonelli | 1 | 1 | 0 |
| Willow Warbler Phylloscopus trochilus | Common Chiffchaff Phylloscopus collybita | 1 | 1 | 0 |
| Willow Warbler Phylloscopus trochilus | Common Reed Bunting Emberiza schoeniclus | 1 | 1 | 0 |
| Western Bonelli's Warbler Phylloscopus bonelli | Common Chiffchaff Phylloscopus collybita | 1 | 0 | 1 |
| Common Chiffchaff Phylloscopus collybita | Fieldfare Turdus pilaris | 1 | 1 | 0 |
| Cetti's Warbler Cettia cetti | Garden Warbler Sylvia borin | 1 | 1 | 0 |
| Brent Goose Branta bernicla | Eurasian Blackcap Sylvia atricapilla | 1 | 0 | 1 |
| Common Crane Grus grus | Eurasian Blackcap Sylvia atricapilla | 1 | 0 | 1 |
| European Golden Plover Pluvialis apricaria | Eurasian Blackcap Sylvia atricapilla | 1 | 0 | 1 |
| Marsh Tit Poecile palustris | Eurasian Blackcap Sylvia atricapilla | 1 | 0 | 1 |
| Eurasian Blackcap Sylvia atricapilla | Short-toed Treecreeper Certhia brachydactyla | 1 | 1 | 0 |
| Eurasian Blackcap Sylvia atricapilla | Lesser Whitethroat Curruca curruca | 1 | 0 | 1 |
| Garden Warbler Sylvia borin | Western Orphean Warbler Curruca hortensis | 1 | 0 | 1 |
| Western Orphean Warbler Curruca hortensis | Sardinian Warbler Curruca melanocephala | 1 | 1 | 0 |
| Sardinian Warbler Curruca melanocephala | Common Whitethroat Curruca communis | 1 | 1 | 0 |
| Western Subalpine Warbler Curruca iberiae | Spectacled Warbler Curruca conspicillata | 1 | 1 | 0 |
| Eastern Subalpine Warbler Curruca cantillans | Spectacled Warbler Curruca conspicillata | 1 | 1 | 0 |
| Western Subalpine Warbler Curruca iberiae | Common Whitethroat Curruca communis | 1 | 0 | 1 |
| Common Whitethroat Curruca communis | Spectacled Warbler Curruca conspicillata | 1 | 0 | 1 |
| Common Snipe Gallinago gallinago | Marmora's Warbler Curruca sarda | 1 | 0 | 1 |
| Marsh Tit Poecile palustris | Dartford Warbler Curruca undata | 1 | 0 | 1 |
| Spectacled Warbler Curruca conspicillata | Dartford Warbler Curruca undata | 1 | 0 | 1 |
| Goldcrest Regulus regulus | Common Firecrest Regulus ignicapilla | 1 | 0 | 1 |
| Common Firecrest Regulus ignicapilla | Corsican Nuthatch Sitta whiteheadi | 1 | 0 | 1 |
| Eurasian Nuthatch Sitta europaea | Short-toed Treecreeper Certhia brachydactyla | 1 | 1 | 0 |
| Corsican Nuthatch Sitta whiteheadi | Eurasian Treecreeper Certhia familiaris | 1 | 0 | 1 |
| Eurasian Treecreeper Certhia familiaris | Short-toed Treecreeper Certhia brachydactyla | 1 | 1 | 0 |
| Common Swift Apus apus | Short-toed Treecreeper Certhia brachydactyla | 1 | 0 | 1 |
| Common Starling Sturnus vulgaris | Spotless Starling Sturnus unicolor | 1 | 0 | 1 |
| Grey-cheeked Thrush Catharus minimus | Swainson's Thrush Catharus ustulatus | 1 | 1 | 0 |
| Swainson's Thrush Catharus ustulatus | Water Pipit Anthus spinoletta | 1 | 1 | 0 |
| Great Spotted Cuckoo Clamator glandarius | Mistle Thrush Turdus viscivorus | 1 | 0 | 1 |
| Mistle Thrush Turdus viscivorus | Song Thrush Turdus philomelos | 1 | 1 | 0 |
| Song Thrush Turdus philomelos | Redwing Turdus iliacus | 1 | 1 | 0 |
| Common Chiffchaff Phylloscopus collybita | Redwing Turdus iliacus | 1 | 0 | 1 |
| Redwing Turdus iliacus | Brambling Fringilla montifringilla | 1 | 1 | 0 |
| Redwing Turdus iliacus | Eurasian Siskin Spinus spinus | 1 | 1 | 0 |
| Mallard Anas platyrhynchos | Eurasian Blackbird Turdus merula | 1 | 0 | 1 |
| Western Swamphen Porphyrio porphyrio | Fieldfare Turdus pilaris | 1 | 0 | 1 |
| Common Starling Sturnus vulgaris | Fieldfare Turdus pilaris | 1 | 0 | 1 |
| Semicollared Flycatcher Ficedula semitorquata | European Pied Flycatcher Ficedula hypoleuca | 1 | 1 | 0 |
| Semicollared Flycatcher Ficedula semitorquata | Collared Flycatcher Ficedula albicollis | 1 | 1 | 0 |
| Common Redstart Phoenicurus phoenicurus | Black Redstart Phoenicurus ochruros | 1 | 0 | 1 |
| Common Rock Thrush Monticola saxatilis | Blue Rock Thrush Monticola solitarius | 1 | 1 | 0 |
| Marbled Duck Marmaronetta angustirostris | Blue Rock Thrush Monticola solitarius | 1 | 0 | 1 |
| Blue Rock Thrush Monticola solitarius | European Stonechat Saxicola rubicola | 1 | 1 | 0 |
| Leach's Storm-Petrel Hydrobates leucorhous | European Stonechat Saxicola rubicola | 1 | 0 | 1 |
| Western Orphean Warbler Curruca hortensis | European Stonechat Saxicola rubicola | 1 | 0 | 1 |
| Whinchat Saxicola rubetra | European Stonechat Saxicola rubicola | 1 | 0 | 1 |
| Whinchat Saxicola rubetra | Northern Wheatear Oenanthe oenanthe | 1 | 0 | 1 |
| Siberian Stonechat Saxicola maurus | Northern Wheatear Oenanthe oenanthe | 1 | 0 | 1 |
| Northern Wheatear Oenanthe oenanthe | Isabelline Wheatear Oenanthe isabellina | 1 | 0 | 1 |
| European Stonechat Saxicola rubicola | Western Black-eared Wheatear Oenanthe hispanica | 1 | 0 | 1 |
| Western Black-eared Wheatear Oenanthe hispanica | Eastern Black-eared Wheatear Oenanthe melanoleuca | 1 | 0 | 1 |
| Common Reed Warbler Acrocephalus scirpaceus | Black Wheatear Oenanthe leucura | 1 | 0 | 1 |
| Black Redstart Phoenicurus ochruros | Black Wheatear Oenanthe leucura | 1 | 0 | 1 |
| Western Black-eared Wheatear Oenanthe hispanica | Black Wheatear Oenanthe leucura | 1 | 0 | 1 |
| Black Wheatear Oenanthe leucura | White-crowned Wheatear Oenanthe leucopyga | 1 | 0 | 1 |
| Italian Sparrow Passer italiae | Eurasian Tree Sparrow Passer montanus | 1 | 1 | 0 |
| Spanish Sparrow Passer hispaniolensis | Rock Sparrow Petronia petronia | 1 | 1 | 0 |
| House Sparrow Passer domesticus | Eurasian Tree Sparrow Passer montanus | 1 | 0 | 1 |
| House Sparrow Passer domesticus | Rock Sparrow Petronia petronia | 1 | 0 | 1 |
| Grey Wagtail Motacilla cinerea | Western Yellow Wagtail Motacilla flava | 1 | 0 | 1 |
| Western Yellow Wagtail Motacilla flava | Rock Pipit Anthus petrosus | 1 | 1 | 0 |
| Meadow Pipit Anthus pratensis | Tree Pipit Anthus trivialis | 1 | 1 | 0 |
| Water Pipit Anthus spinoletta | Brambling Fringilla montifringilla | 1 | 1 | 0 |
| Eurasian Blackcap Sylvia atricapilla | Common Chaffinch Fringilla coelebs | 1 | 0 | 1 |
| Marsh Tit Poecile palustris | Brambling Fringilla montifringilla | 1 | 0 | 1 |
| Brambling Fringilla montifringilla | Trumpeter Finch Bucanetes githagineus | 1 | 1 | 0 |
| Brambling Fringilla montifringilla | Corn Bunting Emberiza calandra | 1 | 1 | 0 |
| Eurasian Bullfinch Pyrrhula pyrrhula | Trumpeter Finch Bucanetes githagineus | 1 | 0 | 1 |
| Twite Linaria flavirostris | Lesser Redpoll Acanthis cabaret | 1 | 1 | 0 |
| Collared Dove Streptopelia decaocto | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Meadow Pipit Anthus pratensis | Common Linnet Linaria cannabina | 1 | 0 | 1 |
| Common Linnet Linaria cannabina | Lesser Redpoll Acanthis cabaret | 1 | 1 | 0 |
| Common Redpoll Acanthis flammea | Lesser Redpoll Acanthis cabaret | 1 | 0 | 1 |
| Common Redpoll Acanthis flammea | Common Crossbill Loxia curvirostra | 1 | 0 | 1 |
| Common Crossbill Loxia curvirostra | Two-barred Crossbill Loxia leucoptera | 1 | 0 | 1 |
| Brent Goose Branta bernicla | European Goldfinch Carduelis carduelis | 1 | 0 | 1 |
| Barn Swallow Hirundo rustica | European Goldfinch Carduelis carduelis | 1 | 0 | 1 |
| Redwing Turdus iliacus | European Goldfinch Carduelis carduelis | 1 | 0 | 1 |
| Mistle Thrush Turdus viscivorus | Citril Finch Carduelis citrinella | 1 | 0 | 1 |
| Citril Finch Carduelis citrinella | Eurasian Siskin Spinus spinus | 1 | 1 | 0 |
| Alpine Chough Pyrrhocorax graculus | Corsican Finch Carduelis corsicana | 1 | 0 | 1 |
| European Goldfinch Carduelis carduelis | Corsican Finch Carduelis corsicana | 1 | 0 | 1 |
| Citril Finch Carduelis citrinella | Corsican Finch Carduelis corsicana | 1 | 0 | 1 |
| Eurasian Siskin Spinus spinus | Cirl Bunting Emberiza cirlus | 1 | 1 | 0 |
| Lapland Bunting Calcarius lapponicus | Rock Bunting Emberiza cia | 1 | 1 | 0 |
| Snow Bunting Plectrophenax nivalis | Cirl Bunting Emberiza cirlus | 1 | 1 | 0 |
| Corn Bunting Emberiza calandra | Common Reed Bunting Emberiza schoeniclus | 1 | 1 | 0 |
| Rock Bunting Emberiza cia | Common Reed Bunting Emberiza schoeniclus | 1 | 1 | 0 |
| Eurasian Jay Garrulus glandarius | Cirl Bunting Emberiza cirlus | 1 | 0 | 1 |
| Song Thrush Turdus philomelos | Cirl Bunting Emberiza cirlus | 1 | 0 | 1 |
| European Greenfinch Chloris chloris | Cirl Bunting Emberiza cirlus | 1 | 0 | 1 |
| Cirl Bunting Emberiza cirlus | Yellowhammer Emberiza citrinella | 1 | 0 | 1 |
| Grey Partridge Perdix perdix | Ortolan Bunting Emberiza hortulana | 1 | 0 | 1 |
| Western Bonelli's Warbler Phylloscopus bonelli | Common Reed Bunting Emberiza schoeniclus | 1 | 0 | 1 |