Carol Rushton: Britain Year List 2021 BOU, All records: Top Blockers Record(s) 1 to 217 of 217 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 Ross's Goose Anser rossii 11 2.35 5 Snow Goose Anser caerulescens 32 6.82 6 Greylag Goose Anser anser 449 95.74 7 Pink-footed Goose Anser brachyrhynchus 357 76.12 8 Tundra Bean Goose Anser serrirostris 83 17.70 9 White-fronted Goose Anser albifrons 238 50.75 10 Mute Swan Cygnus olor 461 98.29 11 Bewick's Swan Cygnus columbianus 135 28.78 12 Whooper Swan Cygnus cygnus 310 66.10 13 Egyptian Goose Alopochen aegyptiaca 370 78.89 14 Shelduck Tadorna tadorna 441 94.03 15 Mandarin Duck Aix galericulata 310 66.10 16 Garganey Spatula querquedula 282 60.13 17 Shoveler Spatula clypeata 444 94.67 18 Gadwall Mareca strepera 442 94.24 19 Wigeon Mareca penelope 442 94.24 20 Mallard Anas platyrhynchos 461 98.29 21 Pintail Anas acuta 390 83.16 22 Teal Anas crecca 445 94.88 23 Green-winged Teal Anas carolinensis 74 15.78 24 Red-crested Pochard Netta rufina 170 36.25 25 Pochard Aythya ferina 426 90.83 26 Ring-necked Duck Aythya collaris 190 40.51 27 Tufted Duck Aythya fuligula 457 97.44 28 Scaup Aythya marila 244 52.03 29 Eider Somateria mollissima 333 71.00 30 Common Scoter Melanitta nigra 347 73.99 31 Long-tailed Duck Clangula hyemalis 205 43.71 32 Goldeneye Bucephala clangula 383 81.66 33 Goosander Mergus merganser 390 83.16 34 Red-breasted Merganser Mergus serrator 324 69.08 35 Red Grouse Lagopus lagopus 209 44.56 36 Black Grouse Lyrurus tetrix 102 21.75 37 Grey Partridge Perdix perdix 294 62.69 38 Pheasant Phasianus colchicus 454 96.80 39 Red-legged Partridge Alectoris rufa 400 85.29 40 Swift Apus apus 430 91.68 41 Cuckoo Cuculus canorus 382 81.45 42 Rock Dove (Feral Pigeon) Columba livia 403 85.93 43 Stock Dove Columba oenas 416 88.70 44 Woodpigeon Columba palumbus 463 98.72 45 Collared Dove Streptopelia decaocto 453 96.59 46 Water Rail Rallus aquaticus 353 75.27 47 Moorhen Gallinula chloropus 458 97.65 48 Coot Fulica atra 456 97.23 49 Crane Grus grus 199 42.43 50 Little Grebe Tachybaptus ruficollis 443 94.46 51 Great Crested Grebe Podiceps cristatus 447 95.31 52 Slavonian Grebe Podiceps auritus 235 50.11 53 Black-necked Grebe Podiceps nigricollis 255 54.37 54 Oystercatcher Haematopus ostralegus 448 95.52 55 Avocet Recurvirostra avosetta 394 84.01 56 Grey Plover Pluvialis squatarola 343 73.13 57 Golden Plover Pluvialis apricaria 389 82.94 58 American Golden Plover Pluvialis dominica 73 15.57 59 Ringed Plover Charadrius hiaticula 399 85.07 60 Little Ringed Plover Charadrius dubius 360 76.76 61 Lapwing Vanellus vanellus 453 96.59 62 White-tailed Plover Vanellus leucurus 200 42.64 63 Eurasian Whimbrel Numenius phaeopus 349 74.41 64 Curlew Numenius arquata 436 92.96 65 Bar-tailed Godwit Limosa lapponica 368 78.46 66 Black-tailed Godwit Limosa limosa 411 87.63 67 Jack Snipe Lymnocryptes minimus 232 49.47 68 Woodcock Scolopax rusticola 291 62.05 69 Snipe Gallinago gallinago 413 88.06 70 Common Sandpiper Actitis hypoleucos 397 84.65 71 Green Sandpiper Tringa ochropus 351 74.84 72 Wood Sandpiper Tringa glareola 270 57.57 73 Redshank Tringa totanus 434 92.54 74 Spotted Redshank Tringa erythropus 331 70.58 75 Greenshank Tringa nebularia 382 81.45 76 Turnstone Arenaria interpres 411 87.63 77 Knot Calidris canutus 349 74.41 78 Ruff Calidris pugnax 369 78.68 79 Curlew Sandpiper Calidris ferruginea 259 55.22 80 Dunlin Calidris alpina 418 89.13 81 Purple Sandpiper Calidris maritima 265 56.50 82 Baird's Sandpiper Calidris bairdii 20 4.26 83 Little Stint Calidris minuta 290 61.83 84 Little Tern Sternula albifrons 286 60.98 85 Black Tern Chlidonias niger 167 35.61 86 Arctic Tern Sterna paradisaea 290 61.83 87 Common Tern Sterna hirundo 407 86.78 88 Roseate Tern Sterna dougallii 143 30.49 89 Sandwich Tern Thalasseus sandvicensis 372 79.32 90 Little Gull Hydrocoloeus minutus 281 59.91 91 Kittiwake Rissa tridactyla 382 81.45 92 Bonaparte's Gull Chroicocephalus philadelphia 107 22.81 93 Black-headed Gull Chroicocephalus ridibundus 460 98.08 94 Mediterranean Gull Ichthyaetus melanocephalus 366 78.04 95 Common Gull Larus canus 418 89.13 96 Herring Gull Larus argentatus 457 97.44 97 Yellow-legged Gull Larus michahellis 226 48.19 98 Great Black-backed Gull Larus marinus 433 92.32 99 Lesser Black-backed Gull Larus fuscus 448 95.52 100 Puffin Fratercula arctica 305 65.03 101 Black Guillemot Cepphus grylle 206 43.92 102 Razorbill Alca torda 377 80.38 103 Common Guillemot Uria aalge 387 82.52 104 Great Northern Diver Gavia immer 287 61.19 105 Black-browed Albatross Thalassarche melanophris 200 42.64 106 Fulmar Fulmarus glacialis 389 82.94 107 Gannet Morus bassanus 405 86.35 108 Cormorant Phalacrocorax carbo 457 97.44 109 Shag Gulosus aristotelis 370 78.89 110 Glossy Ibis Plegadis falcinellus 213 45.42 111 Spoonbill Platalea leucorodia 335 71.43 112 Bittern Botaurus stellaris 294 62.69 113 Little Egret Egretta garzetta 444 94.67 114 Cattle Egret Bubulcus ibis 300 63.97 115 Great White Egret Ardea alba 387 82.52 116 Grey Heron Ardea cinerea 454 96.80 117 Osprey Pandion haliaetus 294 62.69 118 Sparrowhawk Accipiter nisus 443 94.46 119 Goshawk Accipiter gentilis 195 41.58 120 Marsh Harrier Circus aeruginosus 406 86.57 121 Hen Harrier Circus cyaneus 227 48.40 122 Red Kite Milvus milvus 434 92.54 123 White-tailed Eagle Haliaeetus albicilla 114 24.31 124 Buzzard Buteo buteo 457 97.44 125 Barn Owl Tyto alba 371 79.10 126 Little Owl Athene noctua 281 59.91 127 Long-eared Owl Asio otus 113 24.09 128 Short-eared Owl Asio flammeus 262 55.86 129 Tawny Owl Strix aluco 364 77.61 130 Kingfisher Alcedo atthis 410 87.42 131 Great Spotted Woodpecker Dendrocopos major 443 94.46 132 Green Woodpecker Picus viridis 395 84.22 133 Kestrel Falco tinnunculus 453 96.59 134 Merlin Falco columbarius 275 58.64 135 Hobby Falco subbuteo 347 73.99 136 Peregrine Falco peregrinus 421 89.77 137 Ring-necked Parakeet Psittacula krameri 290 61.83 138 Great Grey Shrike Lanius excubitor 67 14.29 139 Jay Garrulus glandarius 447 95.31 140 Magpie Pica pica 460 98.08 141 Jackdaw Coloeus monedula 459 97.87 142 Rook Corvus frugilegus 453 96.59 143 Carrion Crow Corvus corone 460 98.08 144 Raven Corvus corax 415 88.49 145 Coal Tit Periparus ater 446 95.10 146 Marsh Tit Poecile palustris 318 67.80 147 Willow Tit Poecile montanus 179 38.17 148 Blue Tit Cyanistes caeruleus 463 98.72 149 Great Tit Parus major 461 98.29 150 Penduline Tit Remiz pendulinus 25 5.33 151 Bearded Tit Panurus biarmicus 299 63.75 152 Woodlark Lullula arborea 210 44.78 153 Skylark Alauda arvensis 440 93.82 154 Sand Martin Riparia riparia 426 90.83 155 Swallow Hirundo rustica 437 93.18 156 House Martin Delichon urbicum 432 92.11 157 Cetti's Warbler Cettia cetti 387 82.52 158 Long-tailed Tit Aegithalos caudatus 453 96.59 159 Willow Warbler Phylloscopus trochilus 415 88.49 160 Chiffchaff Phylloscopus collybita 441 94.03 161 Two-barred Greenish Warbler Phylloscopus plumbeitarsus 69 14.71 162 Sedge Warbler Acrocephalus schoenobaenus 413 88.06 163 Blyth's Reed Warbler Acrocephalus dumetorum 43 9.17 164 Reed Warbler Acrocephalus scirpaceus 399 85.07 165 River Warbler Locustella fluviatilis 128 27.29 166 Blackcap Sylvia atricapilla 437 93.18 167 Garden Warbler Sylvia borin 343 73.13 168 Barred Warbler Curruca nisoria 63 13.43 169 Lesser Whitethroat Curruca curruca 332 70.79 170 Whitethroat Curruca communis 421 89.77 171 Firecrest Regulus ignicapilla 198 42.22 172 Goldcrest Regulus regulus 427 91.04 173 Wren Troglodytes troglodytes 458 97.65 174 Nuthatch Sitta europaea 431 91.90 175 Treecreeper Certhia familiaris 420 89.55 176 Northern Mockingbird Mimus polyglottos 132 28.14 177 Starling Sturnus vulgaris 458 97.65 178 Song Thrush Turdus philomelos 454 96.80 179 Mistle Thrush Turdus viscivorus 437 93.18 180 Redwing Turdus iliacus 443 94.46 181 Blackbird Turdus merula 462 98.51 182 Fieldfare Turdus pilaris 422 89.98 183 Ring Ouzel Turdus torquatus 261 55.65 184 Spotted Flycatcher Muscicapa striata 330 70.36 185 Robin Erithacus rubecula 462 98.51 186 Nightingale Luscinia megarhynchos 158 33.69 187 Pied Flycatcher Ficedula hypoleuca 286 60.98 188 Black Redstart Phoenicurus ochruros 230 49.04 189 Redstart Phoenicurus phoenicurus 335 71.43 190 Whinchat Saxicola rubetra 302 64.39 191 Stonechat Saxicola rubicola 432 92.11 192 Wheatear Oenanthe oenanthe 409 87.21 193 Dipper Cinclus cinclus 289 61.62 194 Tree Sparrow Passer montanus 328 69.94 195 House Sparrow Passer domesticus 458 97.65 196 Dunnock Prunella modularis 462 98.51 197 Yellow Wagtail Motacilla flava 368 78.46 198 Grey Wagtail Motacilla cinerea 440 93.82 199 Pied Wagtail Motacilla alba 460 98.08 200 Meadow Pipit Anthus pratensis 434 92.54 201 Tree Pipit Anthus trivialis 307 65.46 202 Water Pipit Anthus spinoletta 155 33.05 203 Rock Pipit Anthus petrosus 372 79.32 204 Chaffinch Fringilla coelebs 457 97.44 205 Brambling Fringilla montifringilla 310 66.10 206 Hawfinch Coccothraustes coccothraustes 170 36.25 207 Bullfinch Pyrrhula pyrrhula 429 91.47 208 Greenfinch Chloris chloris 453 96.59 209 Linnet Linaria cannabina 437 93.18 210 Lesser Redpoll Acanthis cabaret 341 72.71 211 Common Crossbill Loxia curvirostra 263 56.08 212 Goldfinch Carduelis carduelis 454 96.80 213 Siskin Spinus spinus 414 88.27 214 Corn Bunting Emberiza calandra 289 61.62 215 Yellowhammer Emberiza citrinella 407 86.78 216 Cirl Bunting Emberiza cirlus 103 21.96 217 Reed Bunting Emberiza schoeniclus 439 93.60