Keith Smith: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 200 of 200 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 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 Whooper Swan Cygnus cygnus 310 66.10 10 Egyptian Goose Alopochen aegyptiaca 370 78.89 11 Shelduck Tadorna tadorna 441 94.03 12 Mandarin Duck Aix galericulata 310 66.10 13 Garganey Spatula querquedula 282 60.13 14 Shoveler Spatula clypeata 444 94.67 15 Gadwall Mareca strepera 442 94.24 16 Wigeon Mareca penelope 442 94.24 17 American Wigeon Mareca americana 68 14.50 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 Ring-necked Duck Aythya collaris 190 40.51 24 Tufted Duck Aythya fuligula 457 97.44 25 Scaup Aythya marila 244 52.03 26 Common Scoter Melanitta nigra 347 73.99 27 Long-tailed Duck Clangula hyemalis 205 43.71 28 Goldeneye Bucephala clangula 383 81.66 29 Smew Mergellus albellus 159 33.90 30 Goosander Mergus merganser 390 83.16 31 Red-breasted Merganser Mergus serrator 324 69.08 32 Ruddy Duck Oxyura jamaicensis 35 7.46 33 Grey Partridge Perdix perdix 294 62.69 34 Pheasant Phasianus colchicus 454 96.80 35 Red-legged Partridge Alectoris rufa 400 85.29 36 Nightjar Caprimulgus europaeus 205 43.71 37 Swift Apus apus 430 91.68 38 Cuckoo Cuculus canorus 382 81.45 39 Rock Dove (Feral Pigeon) Columba livia 403 85.93 40 Stock Dove Columba oenas 416 88.70 41 Woodpigeon Columba palumbus 463 98.72 42 Turtle Dove Streptopelia turtur 172 36.67 43 Collared Dove Streptopelia decaocto 453 96.59 44 Moorhen Gallinula chloropus 458 97.65 45 Coot Fulica atra 456 97.23 46 Little Grebe Tachybaptus ruficollis 443 94.46 47 Red-necked Grebe Podiceps grisegena 141 30.06 48 Great Crested Grebe Podiceps cristatus 447 95.31 49 Slavonian Grebe Podiceps auritus 235 50.11 50 Black-necked Grebe Podiceps nigricollis 255 54.37 51 Stone-curlew Burhinus oedicnemus 168 35.82 52 Oystercatcher Haematopus ostralegus 448 95.52 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 Ringed Plover Charadrius hiaticula 399 85.07 58 Little Ringed Plover Charadrius dubius 360 76.76 59 Lapwing Vanellus vanellus 453 96.59 60 White-tailed Plover Vanellus leucurus 200 42.64 61 Eurasian Whimbrel Numenius phaeopus 349 74.41 62 Curlew Numenius arquata 436 92.96 63 Bar-tailed Godwit Limosa lapponica 368 78.46 64 Black-tailed Godwit Limosa limosa 411 87.63 65 Jack Snipe Lymnocryptes minimus 232 49.47 66 Woodcock Scolopax rusticola 291 62.05 67 Snipe Gallinago gallinago 413 88.06 68 Common Sandpiper Actitis hypoleucos 397 84.65 69 Green Sandpiper Tringa ochropus 351 74.84 70 Wood Sandpiper Tringa glareola 270 57.57 71 Redshank Tringa totanus 434 92.54 72 Spotted Redshank Tringa erythropus 331 70.58 73 Greenshank Tringa nebularia 382 81.45 74 Turnstone Arenaria interpres 411 87.63 75 Knot Calidris canutus 349 74.41 76 Ruff Calidris pugnax 369 78.68 77 Curlew Sandpiper Calidris ferruginea 260 55.44 78 Sanderling Calidris alba 369 78.68 79 Dunlin Calidris alpina 418 89.13 80 Little Stint Calidris minuta 290 61.83 81 Pectoral Sandpiper Calidris melanotos 177 37.74 82 Little Tern Sternula albifrons 286 60.98 83 Black Tern Chlidonias niger 167 35.61 84 Arctic Tern Sterna paradisaea 290 61.83 85 Common Tern Sterna hirundo 407 86.78 86 Roseate Tern Sterna dougallii 143 30.49 87 Sandwich Tern Thalasseus sandvicensis 372 79.32 88 Kittiwake Rissa tridactyla 382 81.45 89 Bonaparte's Gull Chroicocephalus philadelphia 107 22.81 90 Black-headed Gull Chroicocephalus ridibundus 460 98.08 91 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 92 Common Gull Larus canus 418 89.13 93 Caspian Gull Larus cachinnans 184 39.23 94 Herring Gull Larus argentatus 457 97.44 95 Yellow-legged Gull Larus michahellis 226 48.19 96 Great Black-backed Gull Larus marinus 433 92.32 97 Lesser Black-backed Gull Larus fuscus 448 95.52 98 Puffin Fratercula arctica 305 65.03 99 Razorbill Alca torda 377 80.38 100 Common Guillemot Uria aalge 387 82.52 101 Red-throated Diver Gavia stellata 330 70.36 102 Great Northern Diver Gavia immer 287 61.19 103 Fulmar Fulmarus glacialis 389 82.94 104 Gannet Morus bassanus 405 86.35 105 Cormorant Phalacrocorax carbo 457 97.44 106 Shag Gulosus aristotelis 370 78.89 107 Glossy Ibis Plegadis falcinellus 213 45.42 108 Spoonbill Platalea leucorodia 335 71.43 109 Bittern Botaurus stellaris 294 62.69 110 Little Egret Egretta garzetta 444 94.67 111 Cattle Egret Bubulcus ibis 300 63.97 112 Great White Egret Ardea alba 387 82.52 113 Grey Heron Ardea cinerea 454 96.80 114 Osprey Pandion haliaetus 294 62.69 115 Sparrowhawk Accipiter nisus 443 94.46 116 Goshawk Accipiter gentilis 195 41.58 117 Marsh Harrier Circus aeruginosus 406 86.57 118 Red Kite Milvus milvus 434 92.54 119 Buzzard Buteo buteo 457 97.44 120 Barn Owl Tyto alba 371 79.10 121 Short-eared Owl Asio flammeus 262 55.86 122 Kingfisher Alcedo atthis 410 87.42 123 Great Spotted Woodpecker Dendrocopos major 443 94.46 124 Green Woodpecker Picus viridis 395 84.22 125 Kestrel Falco tinnunculus 453 96.59 126 Merlin Falco columbarius 275 58.64 127 Hobby Falco subbuteo 347 73.99 128 Peregrine Falco peregrinus 421 89.77 129 Ring-necked Parakeet Psittacula krameri 290 61.83 130 Jay Garrulus glandarius 447 95.31 131 Magpie Pica pica 460 98.08 132 Jackdaw Coloeus monedula 459 97.87 133 Rook Corvus frugilegus 453 96.59 134 Carrion Crow Corvus corone 460 98.08 135 Raven Corvus corax 415 88.49 136 Coal Tit Periparus ater 446 95.10 137 Marsh Tit Poecile palustris 318 67.80 138 Willow Tit Poecile montanus 179 38.17 139 Blue Tit Cyanistes caeruleus 463 98.72 140 Great Tit Parus major 461 98.29 141 Bearded Tit Panurus biarmicus 299 63.75 142 Woodlark Lullula arborea 210 44.78 143 Skylark Alauda arvensis 440 93.82 144 Sand Martin Riparia riparia 426 90.83 145 Swallow Hirundo rustica 437 93.18 146 House Martin Delichon urbicum 432 92.11 147 Cetti's Warbler Cettia cetti 387 82.52 148 Long-tailed Tit Aegithalos caudatus 453 96.59 149 Willow Warbler Phylloscopus trochilus 415 88.49 150 Chiffchaff Phylloscopus collybita 441 94.03 151 Great Reed Warbler Acrocephalus arundinaceus 92 19.62 152 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 153 Reed Warbler Acrocephalus scirpaceus 399 85.07 154 Grasshopper Warbler Locustella naevia 264 56.29 155 Blackcap Sylvia atricapilla 437 93.18 156 Garden Warbler Sylvia borin 343 73.13 157 Lesser Whitethroat Curruca curruca 332 70.79 158 Whitethroat Curruca communis 421 89.77 159 Dartford Warbler Curruca undata 184 39.23 160 Goldcrest Regulus regulus 427 91.04 161 Wren Troglodytes troglodytes 458 97.65 162 Nuthatch Sitta europaea 431 91.90 163 Treecreeper Certhia familiaris 420 89.55 164 Starling Sturnus vulgaris 458 97.65 165 Song Thrush Turdus philomelos 454 96.80 166 Mistle Thrush Turdus viscivorus 437 93.18 167 Redwing Turdus iliacus 443 94.46 168 Blackbird Turdus merula 462 98.51 169 Fieldfare Turdus pilaris 422 89.98 170 Ring Ouzel Turdus torquatus 261 55.65 171 Robin Erithacus rubecula 462 98.51 172 Pied Flycatcher Ficedula hypoleuca 286 60.98 173 Black Redstart Phoenicurus ochruros 230 49.04 174 Redstart Phoenicurus phoenicurus 335 71.43 175 Whinchat Saxicola rubetra 302 64.39 176 Stonechat Saxicola rubicola 432 92.11 177 Wheatear Oenanthe oenanthe 409 87.21 178 Dipper Cinclus cinclus 289 61.62 179 Tree Sparrow Passer montanus 328 69.94 180 House Sparrow Passer domesticus 458 97.65 181 Dunnock Prunella modularis 462 98.51 182 Yellow Wagtail Motacilla flava 368 78.46 183 Grey Wagtail Motacilla cinerea 440 93.82 184 Pied Wagtail Motacilla alba 460 98.08 185 Meadow Pipit Anthus pratensis 434 92.54 186 Tree Pipit Anthus trivialis 307 65.46 187 Chaffinch Fringilla coelebs 457 97.44 188 Hawfinch Coccothraustes coccothraustes 170 36.25 189 Bullfinch Pyrrhula pyrrhula 429 91.47 190 Greenfinch Chloris chloris 453 96.59 191 Linnet Linaria cannabina 437 93.18 192 Lesser Redpoll Acanthis cabaret 341 72.71 193 Common Crossbill Loxia curvirostra 263 56.08 194 Two-barred Crossbill Loxia leucoptera 22 4.69 195 Goldfinch Carduelis carduelis 454 96.80 196 Siskin Spinus spinus 414 88.27 197 Snow Bunting Plectrophenax nivalis 254 54.16 198 Yellowhammer Emberiza citrinella 407 86.78 199 Little Bunting Emberiza pusilla 110 23.45 200 Reed Bunting Emberiza schoeniclus 439 93.60