Alan Hudson: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 206 of 206 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 Mute Swan Cygnus olor 461 98.29 7 Whooper Swan Cygnus cygnus 310 66.10 8 Egyptian Goose Alopochen aegyptiaca 370 78.89 9 Shelduck Tadorna tadorna 441 94.03 10 Mandarin Duck Aix galericulata 310 66.10 11 Garganey Spatula querquedula 282 60.13 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 Red-crested Pochard Netta rufina 170 36.25 19 Pochard Aythya ferina 426 90.83 20 Ring-necked Duck Aythya collaris 190 40.51 21 Tufted Duck Aythya fuligula 457 97.44 22 Scaup Aythya marila 244 52.03 23 Eider Somateria mollissima 333 71.00 24 Common Scoter Melanitta nigra 347 73.99 25 Goldeneye Bucephala clangula 383 81.66 26 Goosander Mergus merganser 390 83.16 27 Red-breasted Merganser Mergus serrator 324 69.08 28 Red Grouse Lagopus lagopus 209 44.56 29 Grey Partridge Perdix perdix 294 62.69 30 Pheasant Phasianus colchicus 454 96.80 31 Red-legged Partridge Alectoris rufa 400 85.29 32 Nightjar Caprimulgus europaeus 205 43.71 33 Swift Apus apus 430 91.68 34 Cuckoo Cuculus canorus 382 81.45 35 Rock Dove (Feral Pigeon) Columba livia 403 85.93 36 Stock Dove Columba oenas 416 88.70 37 Woodpigeon Columba palumbus 463 98.72 38 Turtle Dove Streptopelia turtur 172 36.67 39 Collared Dove Streptopelia decaocto 453 96.59 40 Water Rail Rallus aquaticus 353 75.27 41 Moorhen Gallinula chloropus 458 97.65 42 Coot Fulica atra 456 97.23 43 Crane Grus grus 199 42.43 44 Little Grebe Tachybaptus ruficollis 443 94.46 45 Great Crested Grebe Podiceps cristatus 447 95.31 46 Slavonian Grebe Podiceps auritus 235 50.11 47 Black-necked Grebe Podiceps nigricollis 255 54.37 48 Stone-curlew Burhinus oedicnemus 168 35.82 49 Oystercatcher Haematopus ostralegus 448 95.52 50 Avocet Recurvirostra avosetta 394 84.01 51 Grey Plover Pluvialis squatarola 343 73.13 52 Golden Plover Pluvialis apricaria 389 82.94 53 Pacific Golden Plover Pluvialis fulva 133 28.36 54 Dotterel Eudromias morinellus 109 23.24 55 Ringed Plover Charadrius hiaticula 399 85.07 56 Little Ringed Plover Charadrius dubius 360 76.76 57 Lapwing Vanellus vanellus 453 96.59 58 White-tailed Plover Vanellus leucurus 200 42.64 59 Eurasian Whimbrel Numenius phaeopus 349 74.41 60 Curlew Numenius arquata 436 92.96 61 Bar-tailed Godwit Limosa lapponica 368 78.46 62 Black-tailed Godwit Limosa limosa 411 87.63 63 Snipe Gallinago gallinago 413 88.06 64 Grey Phalarope Phalaropus fulicarius 114 24.31 65 Common Sandpiper Actitis hypoleucos 397 84.65 66 Green Sandpiper Tringa ochropus 351 74.84 67 Wood Sandpiper Tringa glareola 270 57.57 68 Redshank Tringa totanus 434 92.54 69 Spotted Redshank Tringa erythropus 331 70.58 70 Greenshank Tringa nebularia 382 81.45 71 Turnstone Arenaria interpres 411 87.63 72 Knot Calidris canutus 349 74.41 73 Ruff Calidris pugnax 369 78.68 74 Curlew Sandpiper Calidris ferruginea 260 55.44 75 Long-toed Stint Calidris subminuta 128 27.29 76 Sanderling Calidris alba 369 78.68 77 Dunlin Calidris alpina 418 89.13 78 Purple Sandpiper Calidris maritima 265 56.50 79 Little Stint Calidris minuta 290 61.83 80 Little Tern Sternula albifrons 286 60.98 81 Caspian Tern Hydroprogne caspia 54 11.51 82 Arctic Tern Sterna paradisaea 290 61.83 83 Common Tern Sterna hirundo 407 86.78 84 Sandwich Tern Thalasseus sandvicensis 372 79.32 85 Little Gull Hydrocoloeus minutus 281 59.91 86 Kittiwake Rissa tridactyla 382 81.45 87 Black-headed Gull Chroicocephalus ridibundus 460 98.08 88 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 89 Common Gull Larus canus 418 89.13 90 Herring Gull Larus argentatus 457 97.44 91 Yellow-legged Gull Larus michahellis 226 48.19 92 Great Black-backed Gull Larus marinus 433 92.32 93 Lesser Black-backed Gull Larus fuscus 448 95.52 94 Puffin Fratercula arctica 305 65.03 95 Razorbill Alca torda 377 80.38 96 Common Guillemot Uria aalge 387 82.52 97 Red-throated Diver Gavia stellata 330 70.36 98 Black-throated Diver Gavia arctica 178 37.95 99 Great Northern Diver Gavia immer 287 61.19 100 Black-browed Albatross Thalassarche melanophris 200 42.64 101 Fulmar Fulmarus glacialis 389 82.94 102 Sooty Shearwater Ardenna grisea 126 26.87 103 Gannet Morus bassanus 405 86.35 104 Cormorant Phalacrocorax carbo 457 97.44 105 Shag Gulosus aristotelis 370 78.89 106 Glossy Ibis Plegadis falcinellus 213 45.42 107 Spoonbill Platalea leucorodia 335 71.43 108 Bittern Botaurus stellaris 294 62.69 109 Little Egret Egretta garzetta 444 94.67 110 Cattle Egret Bubulcus ibis 300 63.97 111 Great White Egret Ardea alba 387 82.52 112 Grey Heron Ardea cinerea 454 96.80 113 Osprey Pandion haliaetus 294 62.69 114 Sparrowhawk Accipiter nisus 443 94.46 115 Goshawk Accipiter gentilis 195 41.58 116 Marsh Harrier Circus aeruginosus 406 86.57 117 Montagu's Harrier Circus pygargus 22 4.69 118 Red Kite Milvus milvus 434 92.54 119 White-tailed Eagle Haliaeetus albicilla 114 24.31 120 Buzzard Buteo buteo 457 97.44 121 Barn Owl Tyto alba 371 79.10 122 Little Owl Athene noctua 281 59.91 123 Short-eared Owl Asio flammeus 262 55.86 124 Tawny Owl Strix aluco 364 77.61 125 Hoopoe Upupa epops 92 19.62 126 Kingfisher Alcedo atthis 410 87.42 127 Great Spotted Woodpecker Dendrocopos major 443 94.46 128 Green Woodpecker Picus viridis 395 84.22 129 Kestrel Falco tinnunculus 453 96.59 130 Merlin Falco columbarius 275 58.64 131 Hobby Falco subbuteo 347 73.99 132 Peregrine Falco peregrinus 421 89.77 133 Ring-necked Parakeet Psittacula krameri 290 61.83 134 Jay Garrulus glandarius 447 95.31 135 Magpie Pica pica 460 98.08 136 Jackdaw Coloeus monedula 459 97.87 137 Rook Corvus frugilegus 453 96.59 138 Carrion Crow Corvus corone 460 98.08 139 Coal Tit Periparus ater 446 95.10 140 Marsh Tit Poecile palustris 318 67.80 141 Willow Tit Poecile montanus 179 38.17 142 Blue Tit Cyanistes caeruleus 463 98.72 143 Great Tit Parus major 461 98.29 144 Bearded Tit Panurus biarmicus 299 63.75 145 Woodlark Lullula arborea 210 44.78 146 Skylark Alauda arvensis 440 93.82 147 Shore Lark Eremophila alpestris 122 26.01 148 Sand Martin Riparia riparia 426 90.83 149 Swallow Hirundo rustica 437 93.18 150 House Martin Delichon urbicum 432 92.11 151 Cetti's Warbler Cettia cetti 387 82.52 152 Long-tailed Tit Aegithalos caudatus 453 96.59 153 Wood Warbler Phylloscopus sibilatrix 179 38.17 154 Yellow-browed Warbler Phylloscopus inornatus 128 27.29 155 Willow Warbler Phylloscopus trochilus 415 88.49 156 Chiffchaff Phylloscopus collybita 441 94.03 157 Two-barred Greenish Warbler Phylloscopus plumbeitarsus 69 14.71 158 Great Reed Warbler Acrocephalus arundinaceus 92 19.62 159 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 160 Reed Warbler Acrocephalus scirpaceus 399 85.07 161 Grasshopper Warbler Locustella naevia 264 56.29 162 Blackcap Sylvia atricapilla 437 93.18 163 Garden Warbler Sylvia borin 343 73.13 164 Lesser Whitethroat Curruca curruca 332 70.79 165 Whitethroat Curruca communis 421 89.77 166 Dartford Warbler Curruca undata 184 39.23 167 Goldcrest Regulus regulus 427 91.04 168 Wren Troglodytes troglodytes 458 97.65 169 Nuthatch Sitta europaea 431 91.90 170 Treecreeper Certhia familiaris 420 89.55 171 Starling Sturnus vulgaris 458 97.65 172 Song Thrush Turdus philomelos 454 96.80 173 Mistle Thrush Turdus viscivorus 437 93.18 174 Redwing Turdus iliacus 443 94.46 175 Blackbird Turdus merula 462 98.51 176 Fieldfare Turdus pilaris 422 89.98 177 Ring Ouzel Turdus torquatus 261 55.65 178 Robin Erithacus rubecula 462 98.51 179 Nightingale Luscinia megarhynchos 158 33.69 180 Bluethroat Luscinia svecica 83 17.70 181 Redstart Phoenicurus phoenicurus 335 71.43 182 Whinchat Saxicola rubetra 302 64.39 183 Stonechat Saxicola rubicola 432 92.11 184 Wheatear Oenanthe oenanthe 409 87.21 185 Dipper Cinclus cinclus 289 61.62 186 Tree Sparrow Passer montanus 328 69.94 187 House Sparrow Passer domesticus 458 97.65 188 Dunnock Prunella modularis 462 98.51 189 Yellow Wagtail Motacilla flava 368 78.46 190 Grey Wagtail Motacilla cinerea 440 93.82 191 Pied Wagtail Motacilla alba 460 98.08 192 Meadow Pipit Anthus pratensis 434 92.54 193 Chaffinch Fringilla coelebs 457 97.44 194 Brambling Fringilla montifringilla 310 66.10 195 Bullfinch Pyrrhula pyrrhula 429 91.47 196 Greenfinch Chloris chloris 453 96.59 197 Linnet Linaria cannabina 437 93.18 198 Lesser Redpoll Acanthis cabaret 341 72.71 199 Common Crossbill Loxia curvirostra 263 56.08 200 Goldfinch Carduelis carduelis 454 96.80 201 Siskin Spinus spinus 414 88.27 202 Snow Bunting Plectrophenax nivalis 254 54.16 203 Corn Bunting Emberiza calandra 289 61.62 204 Yellowhammer Emberiza citrinella 407 86.78 205 Little Bunting Emberiza pusilla 110 23.45 206 Reed Bunting Emberiza schoeniclus 439 93.60