Andrew McCafferty: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 186 of 186 total. Seq. Species Scientific Name Seen By Other Listers Other Listers (%) 1 Brent Goose Branta bernicla 359 76.55 2 Canada Goose Branta canadensis 460 98.08 3 Barnacle Goose Branta leucopsis 322 68.66 4 Greylag Goose Anser anser 449 95.74 5 Pink-footed Goose Anser brachyrhynchus 357 76.12 6 White-fronted Goose Anser albifrons 238 50.75 7 Mute Swan Cygnus olor 461 98.29 8 Bewick's Swan Cygnus columbianus 135 28.78 9 Whooper Swan Cygnus cygnus 310 66.10 10 Egyptian Goose Alopochen aegyptiaca 370 78.89 11 Shelduck Tadorna tadorna 441 94.03 12 Garganey Spatula querquedula 282 60.13 13 Shoveler Spatula clypeata 444 94.67 14 Gadwall Mareca strepera 442 94.24 15 Wigeon Mareca penelope 442 94.24 16 Mallard Anas platyrhynchos 461 98.29 17 Pintail Anas acuta 390 83.16 18 Teal Anas crecca 445 94.88 19 Green-winged Teal Anas carolinensis 74 15.78 20 Pochard Aythya ferina 426 90.83 21 Ring-necked Duck Aythya collaris 190 40.51 22 Tufted Duck Aythya fuligula 457 97.44 23 Eider Somateria mollissima 333 71.00 24 Common Scoter Melanitta nigra 347 73.99 25 Long-tailed Duck Clangula hyemalis 205 43.71 26 Goldeneye Bucephala clangula 383 81.66 27 Goosander Mergus merganser 390 83.16 28 Red-breasted Merganser Mergus serrator 324 69.08 29 Red Grouse Lagopus lagopus 209 44.56 30 Grey Partridge Perdix perdix 294 62.69 31 Pheasant Phasianus colchicus 454 96.80 32 Red-legged Partridge Alectoris rufa 400 85.29 33 Swift Apus apus 430 91.68 34 Cuckoo Cuculus canorus 382 81.45 35 Stock Dove Columba oenas 416 88.70 36 Woodpigeon Columba palumbus 463 98.72 37 Collared Dove Streptopelia decaocto 453 96.59 38 Water Rail Rallus aquaticus 353 75.27 39 Moorhen Gallinula chloropus 458 97.65 40 Coot Fulica atra 456 97.23 41 Crane Grus grus 199 42.43 42 Little Grebe Tachybaptus ruficollis 443 94.46 43 Pied-billed Grebe Podilymbus podiceps 21 4.48 44 Great Crested Grebe Podiceps cristatus 447 95.31 45 Slavonian Grebe Podiceps auritus 235 50.11 46 Oystercatcher Haematopus ostralegus 448 95.52 47 Avocet Recurvirostra avosetta 394 84.01 48 Grey Plover Pluvialis squatarola 343 73.13 49 Golden Plover Pluvialis apricaria 389 82.94 50 Ringed Plover Charadrius hiaticula 399 85.07 51 Little Ringed Plover Charadrius dubius 360 76.76 52 Lapwing Vanellus vanellus 453 96.59 53 Eurasian Whimbrel Numenius phaeopus 349 74.41 54 Curlew Numenius arquata 436 92.96 55 Bar-tailed Godwit Limosa lapponica 368 78.46 56 Black-tailed Godwit Limosa limosa 411 87.63 57 Woodcock Scolopax rusticola 291 62.05 58 Snipe Gallinago gallinago 413 88.06 59 Red-necked Phalarope Phalaropus lobatus 65 13.86 60 Common Sandpiper Actitis hypoleucos 397 84.65 61 Green Sandpiper Tringa ochropus 351 74.84 62 Wood Sandpiper Tringa glareola 270 57.57 63 Redshank Tringa totanus 434 92.54 64 Lesser Yellowlegs Tringa flavipes 45 9.59 65 Spotted Redshank Tringa erythropus 331 70.58 66 Greenshank Tringa nebularia 382 81.45 67 Greater Yellowlegs Tringa melanoleuca 14 2.99 68 Turnstone Arenaria interpres 411 87.63 69 Knot Calidris canutus 349 74.41 70 Ruff Calidris pugnax 369 78.68 71 Curlew Sandpiper Calidris ferruginea 259 55.22 72 Sanderling Calidris alba 369 78.68 73 Dunlin Calidris alpina 418 89.13 74 Little Stint Calidris minuta 290 61.83 75 Pectoral Sandpiper Calidris melanotos 177 37.74 76 Little Tern Sternula albifrons 286 60.98 77 Black Tern Chlidonias niger 167 35.61 78 Arctic Tern Sterna paradisaea 290 61.83 79 Common Tern Sterna hirundo 407 86.78 80 Sandwich Tern Thalasseus sandvicensis 372 79.32 81 Little Gull Hydrocoloeus minutus 281 59.91 82 Kittiwake Rissa tridactyla 382 81.45 83 Black-headed Gull Chroicocephalus ridibundus 460 98.08 84 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 85 Common Gull Larus canus 418 89.13 86 Herring Gull Larus argentatus 457 97.44 87 Great Black-backed Gull Larus marinus 433 92.32 88 Lesser Black-backed Gull Larus fuscus 448 95.52 89 Arctic Skua Stercorarius parasiticus 204 43.50 90 Puffin Fratercula arctica 305 65.03 91 Razorbill Alca torda 377 80.38 92 Common Guillemot Uria aalge 387 82.52 93 Red-throated Diver Gavia stellata 330 70.36 94 Black-browed Albatross Thalassarche melanophris 200 42.64 95 Fulmar Fulmarus glacialis 389 82.94 96 Sooty Shearwater Ardenna grisea 126 26.87 97 Manx Shearwater Puffinus puffinus 246 52.45 98 Gannet Morus bassanus 405 86.35 99 Cormorant Phalacrocorax carbo 457 97.44 100 Shag Gulosus aristotelis 370 78.89 101 Spoonbill Platalea leucorodia 335 71.43 102 Bittern Botaurus stellaris 294 62.69 103 Little Egret Egretta garzetta 444 94.67 104 Great White Egret Ardea alba 387 82.52 105 Grey Heron Ardea cinerea 454 96.80 106 Osprey Pandion haliaetus 294 62.69 107 Sparrowhawk Accipiter nisus 443 94.46 108 Marsh Harrier Circus aeruginosus 406 86.57 109 Red Kite Milvus milvus 434 92.54 110 Buzzard Buteo buteo 457 97.44 111 Barn Owl Tyto alba 371 79.10 112 Short-eared Owl Asio flammeus 262 55.86 113 Tawny Owl Strix aluco 364 77.61 114 Kingfisher Alcedo atthis 410 87.42 115 Great Spotted Woodpecker Dendrocopos major 443 94.46 116 Green Woodpecker Picus viridis 395 84.22 117 Kestrel Falco tinnunculus 453 96.59 118 Peregrine Falco peregrinus 421 89.77 119 Ring-necked Parakeet Psittacula krameri 290 61.83 120 Jay Garrulus glandarius 447 95.31 121 Magpie Pica pica 460 98.08 122 Jackdaw Coloeus monedula 459 97.87 123 Rook Corvus frugilegus 453 96.59 124 Carrion Crow Corvus corone 460 98.08 125 Raven Corvus corax 415 88.49 126 Coal Tit Periparus ater 446 95.10 127 Marsh Tit Poecile palustris 318 67.80 128 Willow Tit Poecile montanus 179 38.17 129 Blue Tit Cyanistes caeruleus 463 98.72 130 Great Tit Parus major 461 98.29 131 Bearded Tit Panurus biarmicus 299 63.75 132 Skylark Alauda arvensis 440 93.82 133 Sand Martin Riparia riparia 426 90.83 134 Swallow Hirundo rustica 437 93.18 135 House Martin Delichon urbicum 432 92.11 136 Cetti's Warbler Cettia cetti 387 82.52 137 Long-tailed Tit Aegithalos caudatus 453 96.59 138 Wood Warbler Phylloscopus sibilatrix 179 38.17 139 Willow Warbler Phylloscopus trochilus 415 88.49 140 Chiffchaff Phylloscopus collybita 441 94.03 141 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 142 Reed Warbler Acrocephalus scirpaceus 399 85.07 143 Grasshopper Warbler Locustella naevia 264 56.29 144 Blackcap Sylvia atricapilla 437 93.18 145 Garden Warbler Sylvia borin 343 73.13 146 Lesser Whitethroat Curruca curruca 332 70.79 147 Whitethroat Curruca communis 421 89.77 148 Goldcrest Regulus regulus 427 91.04 149 Wren Troglodytes troglodytes 458 97.65 150 Nuthatch Sitta europaea 431 91.90 151 Treecreeper Certhia familiaris 420 89.55 152 Starling Sturnus vulgaris 458 97.65 153 Song Thrush Turdus philomelos 454 96.80 154 Mistle Thrush Turdus viscivorus 437 93.18 155 Redwing Turdus iliacus 443 94.46 156 Blackbird Turdus merula 462 98.51 157 Fieldfare Turdus pilaris 422 89.98 158 Ring Ouzel Turdus torquatus 261 55.65 159 Spotted Flycatcher Muscicapa striata 330 70.36 160 Robin Erithacus rubecula 462 98.51 161 Pied Flycatcher Ficedula hypoleuca 286 60.98 162 Redstart Phoenicurus phoenicurus 335 71.43 163 Whinchat Saxicola rubetra 302 64.39 164 Stonechat Saxicola rubicola 432 92.11 165 Wheatear Oenanthe oenanthe 409 87.21 166 Dipper Cinclus cinclus 289 61.62 167 Tree Sparrow Passer montanus 328 69.94 168 House Sparrow Passer domesticus 458 97.65 169 Dunnock Prunella modularis 462 98.51 170 Yellow Wagtail Motacilla flava 368 78.46 171 Grey Wagtail Motacilla cinerea 440 93.82 172 Pied Wagtail Motacilla alba 460 98.08 173 Meadow Pipit Anthus pratensis 434 92.54 174 Tree Pipit Anthus trivialis 307 65.46 175 Rock Pipit Anthus petrosus 372 79.32 176 Chaffinch Fringilla coelebs 457 97.44 177 Brambling Fringilla montifringilla 310 66.10 178 Bullfinch Pyrrhula pyrrhula 429 91.47 179 Greenfinch Chloris chloris 453 96.59 180 Twite Linaria flavirostris 178 37.95 181 Linnet Linaria cannabina 437 93.18 182 Lesser Redpoll Acanthis cabaret 341 72.71 183 Goldfinch Carduelis carduelis 454 96.80 184 Siskin Spinus spinus 414 88.27 185 Yellowhammer Emberiza citrinella 407 86.78 186 Reed Bunting Emberiza schoeniclus 439 93.60