Geoffrey Yarnell: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 130 of 130 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 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 Shelduck Tadorna tadorna 441 94.03 8 Shoveler Spatula clypeata 444 94.67 9 Gadwall Mareca strepera 442 94.24 10 Wigeon Mareca penelope 442 94.24 11 Mallard Anas platyrhynchos 461 98.29 12 Pintail Anas acuta 390 83.16 13 Teal Anas crecca 445 94.88 14 Green-winged Teal Anas carolinensis 74 15.78 15 Pochard Aythya ferina 426 90.83 16 Tufted Duck Aythya fuligula 457 97.44 17 Eider Somateria mollissima 333 71.00 18 Velvet Scoter Melanitta fusca 171 36.46 19 Goldeneye Bucephala clangula 383 81.66 20 Smew Mergellus albellus 159 33.90 21 Hooded Merganser Lophodytes cucullatus 13 2.77 22 Goosander Mergus merganser 390 83.16 23 Red-breasted Merganser Mergus serrator 324 69.08 24 Grey Partridge Perdix perdix 294 62.69 25 Pheasant Phasianus colchicus 454 96.80 26 Red-legged Partridge Alectoris rufa 400 85.29 27 Swift Apus apus 430 91.68 28 Cuckoo Cuculus canorus 382 81.45 29 Rock Dove (Feral Pigeon) Columba livia 403 85.93 30 Woodpigeon Columba palumbus 463 98.72 31 Collared Dove Streptopelia decaocto 453 96.59 32 Moorhen Gallinula chloropus 458 97.65 33 Coot Fulica atra 456 97.23 34 Little Grebe Tachybaptus ruficollis 443 94.46 35 Great Crested Grebe Podiceps cristatus 447 95.31 36 Oystercatcher Haematopus ostralegus 448 95.52 37 Grey Plover Pluvialis squatarola 343 73.13 38 Ringed Plover Charadrius hiaticula 399 85.07 39 Lapwing Vanellus vanellus 453 96.59 40 Curlew Numenius arquata 436 92.96 41 Bar-tailed Godwit Limosa lapponica 368 78.46 42 Snipe Gallinago gallinago 413 88.06 43 Common Sandpiper Actitis hypoleucos 397 84.65 44 Wood Sandpiper Tringa glareola 270 57.57 45 Redshank Tringa totanus 434 92.54 46 Turnstone Arenaria interpres 411 87.63 47 Sanderling Calidris alba 369 78.68 48 Dunlin Calidris alpina 418 89.13 49 Purple Sandpiper Calidris maritima 265 56.50 50 Arctic Tern Sterna paradisaea 290 61.83 51 Common Tern Sterna hirundo 407 86.78 52 Sandwich Tern Thalasseus sandvicensis 372 79.32 53 Little Gull Hydrocoloeus minutus 281 59.91 54 Kittiwake Rissa tridactyla 382 81.45 55 Black-headed Gull Chroicocephalus ridibundus 460 98.08 56 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 57 Common Gull Larus canus 418 89.13 58 Herring Gull Larus argentatus 457 97.44 59 Great Black-backed Gull Larus marinus 433 92.32 60 Glaucous Gull Larus hyperboreus 88 18.76 61 Lesser Black-backed Gull Larus fuscus 448 95.52 62 Iceland Gull Larus glaucoides 158 33.69 63 Razorbill Alca torda 377 80.38 64 Common Guillemot Uria aalge 387 82.52 65 Red-throated Diver Gavia stellata 330 70.36 66 Great Northern Diver Gavia immer 287 61.19 67 Fulmar Fulmarus glacialis 389 82.94 68 Gannet Morus bassanus 405 86.35 69 Cormorant Phalacrocorax carbo 457 97.44 70 Shag Gulosus aristotelis 370 78.89 71 Little Egret Egretta garzetta 444 94.67 72 Great White Egret Ardea alba 387 82.52 73 Grey Heron Ardea cinerea 454 96.80 74 Osprey Pandion haliaetus 294 62.69 75 Marsh Harrier Circus aeruginosus 406 86.57 76 Red Kite Milvus milvus 434 92.54 77 Buzzard Buteo buteo 457 97.44 78 Great Spotted Woodpecker Dendrocopos major 443 94.46 79 Kestrel Falco tinnunculus 453 96.59 80 Merlin Falco columbarius 275 58.64 81 Peregrine Falco peregrinus 421 89.77 82 Jay Garrulus glandarius 447 95.31 83 Magpie Pica pica 460 98.08 84 Jackdaw Coloeus monedula 459 97.87 85 Rook Corvus frugilegus 453 96.59 86 Carrion Crow Corvus corone 460 98.08 87 Hooded Crow Corvus cornix 193 41.15 88 Raven Corvus corax 415 88.49 89 Coal Tit Periparus ater 446 95.10 90 Blue Tit Cyanistes caeruleus 463 98.72 91 Great Tit Parus major 461 98.29 92 Skylark Alauda arvensis 440 93.82 93 Sand Martin Riparia riparia 426 90.83 94 Swallow Hirundo rustica 437 93.18 95 House Martin Delichon urbicum 432 92.11 96 Long-tailed Tit Aegithalos caudatus 453 96.59 97 Willow Warbler Phylloscopus trochilus 415 88.49 98 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 99 Blackcap Sylvia atricapilla 437 93.18 100 Whitethroat Curruca communis 421 89.77 101 Wren Troglodytes troglodytes 458 97.65 102 Treecreeper Certhia familiaris 420 89.55 103 Starling Sturnus vulgaris 458 97.65 104 Song Thrush Turdus philomelos 454 96.80 105 Mistle Thrush Turdus viscivorus 437 93.18 106 Redwing Turdus iliacus 443 94.46 107 Blackbird Turdus merula 462 98.51 108 Fieldfare Turdus pilaris 422 89.98 109 Spotted Flycatcher Muscicapa striata 330 70.36 110 Robin Erithacus rubecula 462 98.51 111 Stonechat Saxicola rubicola 432 92.11 112 Wheatear Oenanthe oenanthe 409 87.21 113 Dipper Cinclus cinclus 289 61.62 114 House Sparrow Passer domesticus 458 97.65 115 Dunnock Prunella modularis 462 98.51 116 Grey Wagtail Motacilla cinerea 440 93.82 117 Pied Wagtail Motacilla alba 460 98.08 118 Tree Pipit Anthus trivialis 307 65.46 119 Rock Pipit Anthus petrosus 372 79.32 120 Chaffinch Fringilla coelebs 457 97.44 121 Bullfinch Pyrrhula pyrrhula 429 91.47 122 Greenfinch Chloris chloris 453 96.59 123 Linnet Linaria cannabina 437 93.18 124 Common Redpoll Acanthis flammea 79 16.84 125 Lesser Redpoll Acanthis cabaret 341 72.71 126 Goldfinch Carduelis carduelis 454 96.80 127 Siskin Spinus spinus 414 88.27 128 Corn Bunting Emberiza calandra 289 61.62 129 Yellowhammer Emberiza citrinella 407 86.78 130 Reed Bunting Emberiza schoeniclus 439 93.60