Henry Cook: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 235 of 235 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 Taiga Bean Goose Anser fabalis 36 7.68 6 Pink-footed Goose Anser brachyrhynchus 357 76.12 7 Tundra Bean Goose Anser serrirostris 83 17.70 8 Mute Swan Cygnus olor 461 98.29 9 Bewick's Swan Cygnus columbianus 135 28.78 10 Whooper Swan Cygnus cygnus 310 66.10 11 Egyptian Goose Alopochen aegyptiaca 370 78.89 12 Shelduck Tadorna tadorna 441 94.03 13 Mandarin Duck Aix galericulata 310 66.10 14 Garganey Spatula querquedula 282 60.13 15 Shoveler Spatula clypeata 444 94.67 16 Gadwall Mareca strepera 442 94.24 17 Wigeon Mareca penelope 442 94.24 18 Mallard Anas platyrhynchos 461 98.29 19 Pintail Anas acuta 390 83.16 20 Teal Anas crecca 445 94.88 21 Red-crested Pochard Netta rufina 170 36.25 22 Pochard Aythya ferina 426 90.83 23 Tufted Duck Aythya fuligula 457 97.44 24 Scaup Aythya marila 244 52.03 25 Eider Somateria mollissima 333 71.00 26 Surf Scoter Melanitta perspicillata 53 11.30 27 Velvet Scoter Melanitta fusca 171 36.46 28 Common Scoter Melanitta nigra 347 73.99 29 Long-tailed Duck Clangula hyemalis 205 43.71 30 Goldeneye Bucephala clangula 383 81.66 31 Smew Mergellus albellus 159 33.90 32 Goosander Mergus merganser 390 83.16 33 Red-breasted Merganser Mergus serrator 324 69.08 34 Pheasant Phasianus colchicus 454 96.80 35 Red-legged Partridge Alectoris rufa 400 85.29 36 Swift Apus apus 430 91.68 37 Cuckoo Cuculus canorus 382 81.45 38 Rock Dove (Feral Pigeon) Columba livia 403 85.93 39 Stock Dove Columba oenas 416 88.70 40 Woodpigeon Columba palumbus 463 98.72 41 Turtle Dove Streptopelia turtur 172 36.67 42 Collared Dove Streptopelia decaocto 453 96.59 43 Water Rail Rallus aquaticus 353 75.27 44 Moorhen Gallinula chloropus 458 97.65 45 Coot Fulica atra 456 97.23 46 Crane Grus grus 199 42.43 47 Little Grebe Tachybaptus ruficollis 443 94.46 48 Great Crested Grebe Podiceps cristatus 447 95.31 49 Slavonian Grebe Podiceps auritus 235 50.11 50 Stone-curlew Burhinus oedicnemus 168 35.82 51 Oystercatcher Haematopus ostralegus 448 95.52 52 Black-winged Stilt Himantopus himantopus 82 17.48 53 Avocet Recurvirostra avosetta 394 84.01 54 Grey Plover Pluvialis squatarola 343 73.13 55 Golden Plover Pluvialis apricaria 389 82.94 56 Pacific Golden Plover Pluvialis fulva 133 28.36 57 Dotterel Eudromias morinellus 109 23.24 58 Ringed Plover Charadrius hiaticula 399 85.07 59 Little Ringed Plover Charadrius dubius 360 76.76 60 Lapwing Vanellus vanellus 453 96.59 61 White-tailed Plover Vanellus leucurus 200 42.64 62 Eurasian Whimbrel Numenius phaeopus 349 74.41 63 Curlew Numenius arquata 436 92.96 64 Bar-tailed Godwit Limosa lapponica 368 78.46 65 Black-tailed Godwit Limosa limosa 411 87.63 66 Jack Snipe Lymnocryptes minimus 232 49.47 67 Woodcock Scolopax rusticola 291 62.05 68 Snipe Gallinago gallinago 413 88.06 69 Common Sandpiper Actitis hypoleucos 397 84.65 70 Green Sandpiper Tringa ochropus 351 74.84 71 Wood Sandpiper Tringa glareola 270 57.57 72 Redshank Tringa totanus 434 92.54 73 Spotted Redshank Tringa erythropus 331 70.58 74 Greenshank Tringa nebularia 382 81.45 75 Turnstone Arenaria interpres 411 87.63 76 Knot Calidris canutus 349 74.41 77 Ruff Calidris pugnax 369 78.68 78 Curlew Sandpiper Calidris ferruginea 260 55.44 79 Long-toed Stint Calidris subminuta 128 27.29 80 Sanderling Calidris alba 369 78.68 81 Dunlin Calidris alpina 418 89.13 82 Baird's Sandpiper Calidris bairdii 20 4.26 83 Little Stint Calidris minuta 290 61.83 84 Collared Pratincole Glareola pratincola 60 12.79 85 Little Tern Sternula albifrons 286 60.98 86 Black Tern Chlidonias niger 167 35.61 87 Arctic Tern Sterna paradisaea 290 61.83 88 Common Tern Sterna hirundo 407 86.78 89 Roseate Tern Sterna dougallii 143 30.49 90 Sandwich Tern Thalasseus sandvicensis 372 79.32 91 Elegant Tern Thalasseus elegans 84 17.91 92 Little Gull Hydrocoloeus minutus 281 59.91 93 Kittiwake Rissa tridactyla 382 81.45 94 Bonaparte's Gull Chroicocephalus philadelphia 107 22.81 95 Black-headed Gull Chroicocephalus ridibundus 460 98.08 96 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 97 Common Gull Larus canus 418 89.13 98 Herring Gull Larus argentatus 457 97.44 99 Yellow-legged Gull Larus michahellis 226 48.19 100 Great Black-backed Gull Larus marinus 433 92.32 101 Lesser Black-backed Gull Larus fuscus 448 95.52 102 Iceland Gull Larus glaucoides 158 33.69 103 Arctic Skua Stercorarius parasiticus 204 43.50 104 Great Skua Stercorarius skua 216 46.06 105 Puffin Fratercula arctica 305 65.03 106 Black Guillemot Cepphus grylle 206 43.92 107 Razorbill Alca torda 377 80.38 108 Common Guillemot Uria aalge 387 82.52 109 Red-throated Diver Gavia stellata 330 70.36 110 Black-browed Albatross Thalassarche melanophris 200 42.64 111 Storm Petrel Hydrobates pelagicus 79 16.84 112 Fulmar Fulmarus glacialis 389 82.94 113 Sooty Shearwater Ardenna grisea 126 26.87 114 Great Shearwater Ardenna gravis 38 8.10 115 Manx Shearwater Puffinus puffinus 246 52.45 116 Balearic Shearwater Puffinus mauretanicus 94 20.04 117 Black Stork Ciconia nigra 82 17.48 118 White Stork Ciconia ciconia 64 13.65 119 Gannet Morus bassanus 405 86.35 120 Cormorant Phalacrocorax carbo 457 97.44 121 Shag Gulosus aristotelis 370 78.89 122 Glossy Ibis Plegadis falcinellus 213 45.42 123 Spoonbill Platalea leucorodia 335 71.43 124 Bittern Botaurus stellaris 294 62.69 125 Little Egret Egretta garzetta 444 94.67 126 Cattle Egret Bubulcus ibis 300 63.97 127 Great White Egret Ardea alba 387 82.52 128 Grey Heron Ardea cinerea 454 96.80 129 Osprey Pandion haliaetus 294 62.69 130 Sparrowhawk Accipiter nisus 443 94.46 131 Goshawk Accipiter gentilis 195 41.58 132 Marsh Harrier Circus aeruginosus 406 86.57 133 Red Kite Milvus milvus 434 92.54 134 Buzzard Buteo buteo 457 97.44 135 Barn Owl Tyto alba 371 79.10 136 Little Owl Athene noctua 281 59.91 137 Short-eared Owl Asio flammeus 262 55.86 138 Tawny Owl Strix aluco 364 77.61 139 Roller Coracias garrulus 113 24.09 140 Kingfisher Alcedo atthis 410 87.42 141 Lesser Spotted Woodpecker Dryobates minor 117 24.95 142 Great Spotted Woodpecker Dendrocopos major 443 94.46 143 Green Woodpecker Picus viridis 395 84.22 144 Kestrel Falco tinnunculus 453 96.59 145 Merlin Falco columbarius 275 58.64 146 Hobby Falco subbuteo 347 73.99 147 Peregrine Falco peregrinus 421 89.77 148 Ring-necked Parakeet Psittacula krameri 290 61.83 149 Golden Oriole Oriolus oriolus 57 12.15 150 Woodchat Shrike Lanius senator 99 21.11 151 Jay Garrulus glandarius 447 95.31 152 Magpie Pica pica 460 98.08 153 Chough Pyrrhocorax pyrrhocorax 194 41.36 154 Jackdaw Coloeus monedula 459 97.87 155 Rook Corvus frugilegus 453 96.59 156 Carrion Crow Corvus corone 460 98.08 157 Hooded Crow Corvus cornix 193 41.15 158 Raven Corvus corax 415 88.49 159 Coal Tit Periparus ater 446 95.10 160 Marsh Tit Poecile palustris 318 67.80 161 Blue Tit Cyanistes caeruleus 463 98.72 162 Great Tit Parus major 461 98.29 163 Bearded Tit Panurus biarmicus 299 63.75 164 Woodlark Lullula arborea 210 44.78 165 Skylark Alauda arvensis 440 93.82 166 Sand Martin Riparia riparia 426 90.83 167 Swallow Hirundo rustica 437 93.18 168 House Martin Delichon urbicum 432 92.11 169 Cetti's Warbler Cettia cetti 387 82.52 170 Long-tailed Tit Aegithalos caudatus 453 96.59 171 Wood Warbler Phylloscopus sibilatrix 179 38.17 172 Western Bonelli's Warbler Phylloscopus bonelli 38 8.10 173 Yellow-browed Warbler Phylloscopus inornatus 128 27.29 174 Willow Warbler Phylloscopus trochilus 415 88.49 175 Chiffchaff Phylloscopus collybita 441 94.03 176 Two-barred Greenish Warbler Phylloscopus plumbeitarsus 69 14.71 177 Great Reed Warbler Acrocephalus arundinaceus 92 19.62 178 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 179 Reed Warbler Acrocephalus scirpaceus 399 85.07 180 River Warbler Locustella fluviatilis 128 27.29 181 Grasshopper Warbler Locustella naevia 264 56.29 182 Blackcap Sylvia atricapilla 437 93.18 183 Garden Warbler Sylvia borin 343 73.13 184 Lesser Whitethroat Curruca curruca 332 70.79 185 Whitethroat Curruca communis 421 89.77 186 Dartford Warbler Curruca undata 184 39.23 187 Firecrest Regulus ignicapilla 198 42.22 188 Goldcrest Regulus regulus 427 91.04 189 Wren Troglodytes troglodytes 458 97.65 190 Nuthatch Sitta europaea 431 91.90 191 Treecreeper Certhia familiaris 420 89.55 192 Starling Sturnus vulgaris 458 97.65 193 Song Thrush Turdus philomelos 454 96.80 194 Mistle Thrush Turdus viscivorus 437 93.18 195 Redwing Turdus iliacus 443 94.46 196 Blackbird Turdus merula 462 98.51 197 Fieldfare Turdus pilaris 422 89.98 198 Spotted Flycatcher Muscicapa striata 330 70.36 199 Robin Erithacus rubecula 462 98.51 200 Nightingale Luscinia megarhynchos 158 33.69 201 Pied Flycatcher Ficedula hypoleuca 286 60.98 202 Black Redstart Phoenicurus ochruros 230 49.04 203 Redstart Phoenicurus phoenicurus 335 71.43 204 Whinchat Saxicola rubetra 302 64.39 205 Stonechat Saxicola rubicola 432 92.11 206 Wheatear Oenanthe oenanthe 409 87.21 207 Dipper Cinclus cinclus 289 61.62 208 Tree Sparrow Passer montanus 328 69.94 209 House Sparrow Passer domesticus 458 97.65 210 Dunnock Prunella modularis 462 98.51 211 Yellow Wagtail Motacilla flava 368 78.46 212 Grey Wagtail Motacilla cinerea 440 93.82 213 Pied Wagtail Motacilla alba 460 98.08 214 Meadow Pipit Anthus pratensis 434 92.54 215 Tree Pipit Anthus trivialis 307 65.46 216 Rock Pipit Anthus petrosus 372 79.32 217 Chaffinch Fringilla coelebs 457 97.44 218 Brambling Fringilla montifringilla 310 66.10 219 Bullfinch Pyrrhula pyrrhula 429 91.47 220 Greenfinch Chloris chloris 453 96.59 221 Linnet Linaria cannabina 437 93.18 222 Lesser Redpoll Acanthis cabaret 341 72.71 223 Common Crossbill Loxia curvirostra 263 56.08 224 Goldfinch Carduelis carduelis 454 96.80 225 Serin Serinus serinus 27 5.76 226 Siskin Spinus spinus 414 88.27 227 Lapland Bunting Calcarius lapponicus 78 16.63 228 Snow Bunting Plectrophenax nivalis 254 54.16 229 Corn Bunting Emberiza calandra 289 61.62 230 Yellowhammer Emberiza citrinella 407 86.78 231 Cirl Bunting Emberiza cirlus 103 21.96 232 Little Bunting Emberiza pusilla 110 23.45 233 Rustic Bunting Emberiza rustica 54 11.51 234 Reed Bunting Emberiza schoeniclus 439 93.60 235 White-throated Sparrow Zonotrichia albicollis 63 13.43