Andrew Bowden: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 154 of 154 total. Seq. Species Scientific Name Seen By Other Listers Other Listers (%) 1 Canada Goose Branta canadensis 460 98.08 2 Barnacle Goose Branta leucopsis 322 68.66 3 Greylag Goose Anser anser 449 95.74 4 Pink-footed Goose Anser brachyrhynchus 357 76.12 5 Mute Swan Cygnus olor 461 98.29 6 Whooper Swan Cygnus cygnus 310 66.10 7 Egyptian Goose Alopochen aegyptiaca 370 78.89 8 Shelduck Tadorna tadorna 441 94.03 9 Mandarin Duck Aix galericulata 310 66.10 10 Garganey Spatula querquedula 282 60.13 11 Shoveler Spatula clypeata 444 94.67 12 Gadwall Mareca strepera 442 94.24 13 Wigeon Mareca penelope 442 94.24 14 Mallard Anas platyrhynchos 461 98.29 15 Pintail Anas acuta 390 83.16 16 Teal Anas crecca 445 94.88 17 Green-winged Teal Anas carolinensis 74 15.78 18 Pochard Aythya ferina 426 90.83 19 Tufted Duck Aythya fuligula 457 97.44 20 Eider Somateria mollissima 333 71.00 21 Goldeneye Bucephala clangula 383 81.66 22 Goosander Mergus merganser 390 83.16 23 Red-breasted Merganser Mergus serrator 324 69.08 24 Black Grouse Lyrurus tetrix 102 21.75 25 Grey Partridge Perdix perdix 294 62.69 26 Pheasant Phasianus colchicus 454 96.80 27 Red-legged Partridge Alectoris rufa 400 85.29 28 Swift Apus apus 430 91.68 29 Cuckoo Cuculus canorus 382 81.45 30 Rock Dove (Feral Pigeon) Columba livia 403 85.93 31 Stock Dove Columba oenas 416 88.70 32 Woodpigeon Columba palumbus 463 98.72 33 Collared Dove Streptopelia decaocto 453 96.59 34 Moorhen Gallinula chloropus 458 97.65 35 Coot Fulica atra 456 97.23 36 Little Grebe Tachybaptus ruficollis 443 94.46 37 Great Crested Grebe Podiceps cristatus 447 95.31 38 Oystercatcher Haematopus ostralegus 448 95.52 39 Avocet Recurvirostra avosetta 394 84.01 40 Grey Plover Pluvialis squatarola 343 73.13 41 Ringed Plover Charadrius hiaticula 399 85.07 42 Little Ringed Plover Charadrius dubius 360 76.76 43 Lapwing Vanellus vanellus 453 96.59 44 Curlew Numenius arquata 436 92.96 45 Bar-tailed Godwit Limosa lapponica 368 78.46 46 Snipe Gallinago gallinago 413 88.06 47 Common Sandpiper Actitis hypoleucos 397 84.65 48 Green Sandpiper Tringa ochropus 351 74.84 49 Wood Sandpiper Tringa glareola 270 57.57 50 Redshank Tringa totanus 434 92.54 51 Spotted Redshank Tringa erythropus 331 70.58 52 Turnstone Arenaria interpres 411 87.63 53 Knot Calidris canutus 349 74.41 54 Ruff Calidris pugnax 369 78.68 55 Dunlin Calidris alpina 418 89.13 56 Arctic Tern Sterna paradisaea 290 61.83 57 Common Tern Sterna hirundo 407 86.78 58 Kittiwake Rissa tridactyla 382 81.45 59 Black-headed Gull Chroicocephalus ridibundus 460 98.08 60 Common Gull Larus canus 418 89.13 61 Herring Gull Larus argentatus 457 97.44 62 Great Black-backed Gull Larus marinus 433 92.32 63 Lesser Black-backed Gull Larus fuscus 448 95.52 64 Puffin Fratercula arctica 305 65.03 65 Razorbill Alca torda 377 80.38 66 Common Guillemot Uria aalge 387 82.52 67 Great Northern Diver Gavia immer 287 61.19 68 Black-browed Albatross Thalassarche melanophris 200 42.64 69 Fulmar Fulmarus glacialis 389 82.94 70 Gannet Morus bassanus 405 86.35 71 Cormorant Phalacrocorax carbo 457 97.44 72 Shag Gulosus aristotelis 370 78.89 73 Bittern Botaurus stellaris 294 62.69 74 Little Egret Egretta garzetta 444 94.67 75 Great White Egret Ardea alba 387 82.52 76 Grey Heron Ardea cinerea 454 96.80 77 Osprey Pandion haliaetus 294 62.69 78 Sparrowhawk Accipiter nisus 443 94.46 79 Marsh Harrier Circus aeruginosus 406 86.57 80 Red Kite Milvus milvus 434 92.54 81 Buzzard Buteo buteo 457 97.44 82 Barn Owl Tyto alba 371 79.10 83 Little Owl Athene noctua 281 59.91 84 Tawny Owl Strix aluco 364 77.61 85 Kingfisher Alcedo atthis 410 87.42 86 Great Spotted Woodpecker Dendrocopos major 443 94.46 87 Green Woodpecker Picus viridis 395 84.22 88 Kestrel Falco tinnunculus 453 96.59 89 Hobby Falco subbuteo 347 73.99 90 Peregrine Falco peregrinus 421 89.77 91 Ring-necked Parakeet Psittacula krameri 290 61.83 92 Jay Garrulus glandarius 447 95.31 93 Magpie Pica pica 460 98.08 94 Jackdaw Coloeus monedula 459 97.87 95 Rook Corvus frugilegus 453 96.59 96 Carrion Crow Corvus corone 460 98.08 97 Hooded Crow Corvus cornix 193 41.15 98 Raven Corvus corax 415 88.49 99 Coal Tit Periparus ater 446 95.10 100 Marsh Tit Poecile palustris 318 67.80 101 Willow Tit Poecile montanus 179 38.17 102 Blue Tit Cyanistes caeruleus 463 98.72 103 Great Tit Parus major 461 98.29 104 Skylark Alauda arvensis 440 93.82 105 Sand Martin Riparia riparia 426 90.83 106 Swallow Hirundo rustica 437 93.18 107 House Martin Delichon urbicum 432 92.11 108 Cetti's Warbler Cettia cetti 387 82.52 109 Long-tailed Tit Aegithalos caudatus 453 96.59 110 Willow Warbler Phylloscopus trochilus 415 88.49 111 Chiffchaff Phylloscopus collybita 441 94.03 112 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 113 Reed Warbler Acrocephalus scirpaceus 399 85.07 114 Grasshopper Warbler Locustella naevia 264 56.29 115 Blackcap Sylvia atricapilla 437 93.18 116 Garden Warbler Sylvia borin 343 73.13 117 Lesser Whitethroat Curruca curruca 332 70.79 118 Whitethroat Curruca communis 421 89.77 119 Goldcrest Regulus regulus 427 91.04 120 Wren Troglodytes troglodytes 458 97.65 121 Nuthatch Sitta europaea 431 91.90 122 Treecreeper Certhia familiaris 420 89.55 123 Starling Sturnus vulgaris 458 97.65 124 Song Thrush Turdus philomelos 454 96.80 125 Mistle Thrush Turdus viscivorus 437 93.18 126 Redwing Turdus iliacus 443 94.46 127 Blackbird Turdus merula 462 98.51 128 Fieldfare Turdus pilaris 422 89.98 129 Spotted Flycatcher Muscicapa striata 330 70.36 130 Robin Erithacus rubecula 462 98.51 131 Pied Flycatcher Ficedula hypoleuca 286 60.98 132 Redstart Phoenicurus phoenicurus 335 71.43 133 Stonechat Saxicola rubicola 432 92.11 134 Dipper Cinclus cinclus 289 61.62 135 Tree Sparrow Passer montanus 328 69.94 136 House Sparrow Passer domesticus 458 97.65 137 Dunnock Prunella modularis 462 98.51 138 Yellow Wagtail Motacilla flava 368 78.46 139 Grey Wagtail Motacilla cinerea 440 93.82 140 Pied Wagtail Motacilla alba 460 98.08 141 Meadow Pipit Anthus pratensis 434 92.54 142 Rock Pipit Anthus petrosus 372 79.32 143 Chaffinch Fringilla coelebs 457 97.44 144 Brambling Fringilla montifringilla 310 66.10 145 Bullfinch Pyrrhula pyrrhula 429 91.47 146 Greenfinch Chloris chloris 453 96.59 147 Linnet Linaria cannabina 437 93.18 148 Common Redpoll Acanthis flammea 79 16.84 149 Common Crossbill Loxia curvirostra 263 56.08 150 Goldfinch Carduelis carduelis 454 96.80 151 Siskin Spinus spinus 414 88.27 152 Corn Bunting Emberiza calandra 289 61.62 153 Yellowhammer Emberiza citrinella 407 86.78 154 Reed Bunting Emberiza schoeniclus 439 93.60