Richard Garner: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 170 of 170 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 Ross's Goose Anser rossii 11 2.35 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 Egyptian Goose Alopochen aegyptiaca 370 78.89 10 Shelduck Tadorna tadorna 441 94.03 11 Mandarin Duck Aix galericulata 310 66.10 12 Shoveler Spatula clypeata 444 94.67 13 Gadwall Mareca strepera 442 94.24 14 Wigeon Mareca penelope 442 94.24 15 Mallard Anas platyrhynchos 461 98.29 16 Pintail Anas acuta 390 83.16 17 Teal Anas crecca 445 94.88 18 Pochard Aythya ferina 426 90.83 19 Tufted Duck Aythya fuligula 457 97.44 20 Scaup Aythya marila 244 52.03 21 Eider Somateria mollissima 333 71.00 22 Long-tailed Duck Clangula hyemalis 205 43.71 23 Goldeneye Bucephala clangula 383 81.66 24 Goosander Mergus merganser 390 83.16 25 Red-breasted Merganser Mergus serrator 324 69.08 26 Red Grouse Lagopus lagopus 209 44.56 27 Grey Partridge Perdix perdix 294 62.69 28 Pheasant Phasianus colchicus 454 96.80 29 Nightjar Caprimulgus europaeus 205 43.71 30 Swift Apus apus 430 91.68 31 Rock Dove (Feral Pigeon) Columba livia 403 85.93 32 Stock Dove Columba oenas 416 88.70 33 Woodpigeon Columba palumbus 463 98.72 34 Collared Dove Streptopelia decaocto 453 96.59 35 Water Rail Rallus aquaticus 353 75.27 36 Moorhen Gallinula chloropus 458 97.65 37 Coot Fulica atra 456 97.23 38 Crane Grus grus 199 42.43 39 Little Grebe Tachybaptus ruficollis 443 94.46 40 Great Crested Grebe Podiceps cristatus 447 95.31 41 Slavonian Grebe Podiceps auritus 235 50.11 42 Black-necked Grebe Podiceps nigricollis 255 54.37 43 Oystercatcher Haematopus ostralegus 448 95.52 44 Avocet Recurvirostra avosetta 394 84.01 45 Golden Plover Pluvialis apricaria 389 82.94 46 Ringed Plover Charadrius hiaticula 399 85.07 47 Little Ringed Plover Charadrius dubius 360 76.76 48 Lapwing Vanellus vanellus 453 96.59 49 Curlew Numenius arquata 436 92.96 50 Bar-tailed Godwit Limosa lapponica 368 78.46 51 Black-tailed Godwit Limosa limosa 411 87.63 52 Woodcock Scolopax rusticola 291 62.05 53 Snipe Gallinago gallinago 413 88.06 54 Common Sandpiper Actitis hypoleucos 397 84.65 55 Green Sandpiper Tringa ochropus 351 74.84 56 Redshank Tringa totanus 434 92.54 57 Spotted Redshank Tringa erythropus 331 70.58 58 Greenshank Tringa nebularia 382 81.45 59 Turnstone Arenaria interpres 411 87.63 60 Knot Calidris canutus 349 74.41 61 Ruff Calidris pugnax 369 78.68 62 Sanderling Calidris alba 369 78.68 63 Dunlin Calidris alpina 418 89.13 64 Arctic Tern Sterna paradisaea 290 61.83 65 Common Tern Sterna hirundo 407 86.78 66 Kittiwake Rissa tridactyla 382 81.45 67 Black-headed Gull Chroicocephalus ridibundus 460 98.08 68 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 69 Common Gull Larus canus 418 89.13 70 Herring Gull Larus argentatus 457 97.44 71 Yellow-legged Gull Larus michahellis 226 48.19 72 Great Black-backed Gull Larus marinus 433 92.32 73 Lesser Black-backed Gull Larus fuscus 448 95.52 74 Arctic Skua Stercorarius parasiticus 204 43.50 75 Pomarine Skua Stercorarius pomarinus 81 17.27 76 Great Skua Stercorarius skua 216 46.06 77 Puffin Fratercula arctica 305 65.03 78 Black Guillemot Cepphus grylle 206 43.92 79 Razorbill Alca torda 377 80.38 80 Common Guillemot Uria aalge 387 82.52 81 Red-throated Diver Gavia stellata 330 70.36 82 Black-throated Diver Gavia arctica 178 37.95 83 Great Northern Diver Gavia immer 287 61.19 84 Storm Petrel Hydrobates pelagicus 79 16.84 85 Fulmar Fulmarus glacialis 389 82.94 86 Manx Shearwater Puffinus puffinus 246 52.45 87 Gannet Morus bassanus 405 86.35 88 Cormorant Phalacrocorax carbo 457 97.44 89 Shag Gulosus aristotelis 370 78.89 90 Bittern Botaurus stellaris 294 62.69 91 Little Egret Egretta garzetta 444 94.67 92 Great White Egret Ardea alba 387 82.52 93 Grey Heron Ardea cinerea 454 96.80 94 Osprey Pandion haliaetus 294 62.69 95 Golden Eagle Aquila chrysaetos 81 17.27 96 Sparrowhawk Accipiter nisus 443 94.46 97 Goshawk Accipiter gentilis 195 41.58 98 Marsh Harrier Circus aeruginosus 406 86.57 99 Hen Harrier Circus cyaneus 227 48.40 100 Red Kite Milvus milvus 434 92.54 101 White-tailed Eagle Haliaeetus albicilla 114 24.31 102 Buzzard Buteo buteo 457 97.44 103 Barn Owl Tyto alba 371 79.10 104 Short-eared Owl Asio flammeus 262 55.86 105 Kingfisher Alcedo atthis 410 87.42 106 Great Spotted Woodpecker Dendrocopos major 443 94.46 107 Kestrel Falco tinnunculus 453 96.59 108 Hobby Falco subbuteo 347 73.99 109 Peregrine Falco peregrinus 421 89.77 110 Jay Garrulus glandarius 447 95.31 111 Magpie Pica pica 460 98.08 112 Jackdaw Coloeus monedula 459 97.87 113 Rook Corvus frugilegus 453 96.59 114 Carrion Crow Corvus corone 460 98.08 115 Hooded Crow Corvus cornix 193 41.15 116 Raven Corvus corax 415 88.49 117 Coal Tit Periparus ater 446 95.10 118 Blue Tit Cyanistes caeruleus 463 98.72 119 Great Tit Parus major 461 98.29 120 Skylark Alauda arvensis 440 93.82 121 Shore Lark Eremophila alpestris 122 26.01 122 Sand Martin Riparia riparia 426 90.83 123 Swallow Hirundo rustica 437 93.18 124 House Martin Delichon urbicum 432 92.11 125 Cetti's Warbler Cettia cetti 387 82.52 126 Long-tailed Tit Aegithalos caudatus 453 96.59 127 Willow Warbler Phylloscopus trochilus 415 88.49 128 Chiffchaff Phylloscopus collybita 441 94.03 129 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 130 Reed Warbler Acrocephalus scirpaceus 399 85.07 131 Blackcap Sylvia atricapilla 437 93.18 132 Garden Warbler Sylvia borin 343 73.13 133 Whitethroat Curruca communis 421 89.77 134 Firecrest Regulus ignicapilla 198 42.22 135 Goldcrest Regulus regulus 427 91.04 136 Wren Troglodytes troglodytes 458 97.65 137 Nuthatch Sitta europaea 431 91.90 138 Treecreeper Certhia familiaris 420 89.55 139 Starling Sturnus vulgaris 458 97.65 140 Song Thrush Turdus philomelos 454 96.80 141 Mistle Thrush Turdus viscivorus 437 93.18 142 Redwing Turdus iliacus 443 94.46 143 Blackbird Turdus merula 462 98.51 144 Fieldfare Turdus pilaris 422 89.98 145 Spotted Flycatcher Muscicapa striata 330 70.36 146 Robin Erithacus rubecula 462 98.51 147 Redstart Phoenicurus phoenicurus 335 71.43 148 Stonechat Saxicola rubicola 432 92.11 149 Wheatear Oenanthe oenanthe 409 87.21 150 Dipper Cinclus cinclus 289 61.62 151 Tree Sparrow Passer montanus 328 69.94 152 House Sparrow Passer domesticus 458 97.65 153 Dunnock Prunella modularis 462 98.51 154 Yellow Wagtail Motacilla flava 368 78.46 155 Grey Wagtail Motacilla cinerea 440 93.82 156 Pied Wagtail Motacilla alba 460 98.08 157 Meadow Pipit Anthus pratensis 434 92.54 158 Tree Pipit Anthus trivialis 307 65.46 159 Chaffinch Fringilla coelebs 457 97.44 160 Bullfinch Pyrrhula pyrrhula 429 91.47 161 Greenfinch Chloris chloris 453 96.59 162 Twite Linaria flavirostris 178 37.95 163 Linnet Linaria cannabina 437 93.18 164 Common Redpoll Acanthis flammea 79 16.84 165 Common Crossbill Loxia curvirostra 263 56.08 166 Goldfinch Carduelis carduelis 454 96.80 167 Siskin Spinus spinus 414 88.27 168 Corn Bunting Emberiza calandra 289 61.62 169 Yellowhammer Emberiza citrinella 407 86.78 170 Reed Bunting Emberiza schoeniclus 439 93.60