Number of 1km squares in which each species
was recorded in South West England



These figures show the total number of squares in which a given species was recorded at least once in a particular year. They provide as useful indication of which species are widely distributed and which have more restricted distributions. For comparative purposes the data can be used to calculate the frequency of occurrence of each species by dividing the number of squares occupied by the total number of squares surveyed. This measure has the advantage that it can be used to compare results based on different numbers of squares. Particular care should be taken in interpreting such results where only a few squares could be surveyed (less than 30-50 squares). While these figures may provide a general indication of major changes in distributions over time they do not provide a statistically robust measure of such changes because they do not take account of the BBS sampling strategy or of temporal variation in the sample of squares surveyed.
BBS trend analyses are available here

 
 

Species 94 95 96 97 98 99 00 01 02 03 04 05 06 07
Total No squares surveyed 204 236 252 288 294 309 292 35 283 294 303 336 440 460
Mute Swan 14 17 25 27 28 30 24 2 30 27 30 30 49 53
Whooper Swan . . . . . . . . . . 1 . . .
Pink-footed Goose . . . . . . . . 1 1 . . . .
Greylag Goose . 1 1 2 2 . 1 . 3 4 . 1 6 2
Feral/hybrid Goose . . . . . . . . . . . 1 1 2
Snow Goose . . . 1 2 1 3 . . . . . . .
Canada Goose 20 21 24 31 31 36 21 2 43 41 44 53 65 75
Barnacle Goose . 2 1 1 . 1 1 . 1 1 2 . . 1
Brent Goose . . . . . . . . . . . . . 1
Red-breasted Goose . . . . . . . . . . 1 . . .
Ruddy Shelduck . . 1 . . . 1 . . . . . . .
Shelduck 10 16 20 18 20 17 19 1 14 15 15 20 25 26
Mandarin . 2 1 2 . 2 1 . 2 3 2 . 3 2
Wigeon . 1 . 1 . . . . . 1 . 1 1 2
Gadwall 3 3 3 2 3 2 4 1 3 2 4 3 2 2
Teal . 1 3 2 1 . 2 . 1 1 3 1 2 1
Mallard 77 92 111 114 116 138 135 11 124 121 135 158 187 216
Feral/hybrid mallard type . . . . . 1 . 1 1 2 4 3 5 4
Pintail . 1 1 1 . . . . . . . . 1 .
Garganey . . 1 . . . . . . 1 . 1 2 .
Shoveler . 1 1 . 1 3 . . . 2 1 1 1 2
Pochard 1 1 1 2 1 1 1 . 1 1 1 5 2 2
Ring-necked Duck . . . . 1 1 . . . . . . . .
Tufted Duck 8 6 6 10 10 11 9 . 10 6 9 9 13 10
Scaup . . . 1 . . . . . 1 . . . .
Eider 1 . . . . . . . . . . . 1 .
Long-tailed Duck . . . . . 1 . . . . . . . .
Goldeneye 1 . 1 . 1 . 1 . 1 . . . . .
Red-breasted Merganser . 1 1 1 1 . 1 . . 1 . 1 . 1
Goosander . 2 1 . 4 . 2 . 1 3 1 1 2 .
Ruddy Duck 1 . . 1 1 2 2 . 2 2 2 3 1 1
Red Grouse . 1 1 . . 1 . . . 1 . . . 1
Red-legged Partridge 24 18 30 29 38 33 36 6 44 47 70 64 75 77
Grey Partridge 15 12 17 13 12 14 12 . 10 10 8 13 20 13
Quail 2 1 1 7 8 2 3 . . 1 3 7 1 1
Pheasant 134 152 167 191 205 240 210 16 213 232 244 279 360 362
Golden Pheasant . . 1 . . . 1 . . . . . 1 .
Red-throated Diver . . . 1 . . . . . . . . . .
Great Northern Diver . . 1 . . . . . . . . . . .
Little Grebe 3 5 3 6 5 12 5 . 8 4 5 8 7 10
Great Crested Grebe 5 5 5 7 6 7 5 . 9 6 10 8 5 5
Fulmar 2 2 1 1 2 3 2 . 1 1 1 1 3 4
Manx Shearwater . . 1 . 1 1 . . . 1 . . . .
Gannet 1 2 2 . 1 2 . 1 1 1 1 1 1 3
Cormorant 17 26 26 29 28 29 24 6 31 32 37 28 37 42
Shag 2 2 2 2 2 2 1 . 1 . . . 1 2
Little Egret 1 1 4 1 1 2 1 . 2 4 10 15 17 25
Grey Heron 46 53 59 72 51 71 62 6 60 81 75 89 100 125
Purple Heron . . . . 1 . . . . . . . . .
Honey Buzzard . 1 . . . . . . . . . . . .
Red Kite . . 1 . . . . . . . 1 2 3 5
Marsh Harrier . . . . . . . . . . . . 1 .
Hen Harrier . . . 1 2 . . . . . . . 1 .
Montagus Harrier . . . . . . . . . . 1 1 . 1
Goshawk 1 . 1 1 1 . 1 . 2 1 1 2 2 1
Sparrowhawk 40 29 36 37 42 43 42 7 35 51 44 56 58 61
Buzzard 93 107 118 153 167 170 187 16 180 181 203 218 298 296
Osprey . . 1 . . . 1 . . . 1 . . .
Kestrel 62 59 57 74 85 63 73 6 55 74 66 93 102 103
Merlin . . . 1 1 . . . 1 . . . . 3
Hobby 2 3 8 5 4 3 4 . 10 8 4 6 12 11
Peregrine . . 3 2 6 3 3 . 5 5 4 11 12 16
Water Rail . 1 . . . . . . . 1 . . . .
Moorhen 41 51 54 56 56 70 52 4 49 48 59 58 92 86
Coot 10 16 19 21 25 24 25 1 16 18 23 24 29 26
Crane . 1 . . . . . . . . . . . .
Oystercatcher 5 5 6 5 6 7 7 1 6 1 5 9 10 9
Avocet . . . . . . . . . . 1 . . .
Stone-curlew . 1 1 1 . . . . 1 . 1 1 . 2
Little Ringed Plover . . . 1 . . . . . . . 1 1 .
Ringed Plover 1 3 3 2 2 1 4 . 1 1 3 2 2 5
Golden Plover . 1 . . . 1 . . . 2 1 . . .
Grey Plover . 1 . . . . . . . . . . 1 .
Lapwing 35 30 38 29 23 35 25 3 20 19 18 37 29 30
Knot . . . . . 1 . . . . . . . .
Sanderling . 1 2 1 . . . . . . . 1 . .
Dunlin . 5 3 1 2 1 2 . 1 1 1 1 1 .
Snipe 2 4 1 6 2 2 2 . 4 3 1 4 7 6
Woodcock . 1 . . . . . . . 1 . . 1 1
Black-tailed Godwit . . 1 . . . 2 . . . . . 1 .
Bar-tailed Godwit 1 . . . 1 1 2 . . . . . . .
Whimbrel 4 6 4 6 5 8 7 . 7 5 7 7 8 8
Curlew 9 12 9 14 10 14 8 1 8 7 8 10 16 11
Redshank 3 3 3 1 3 . 3 . . . 1 1 1 2
Greenshank . . . . . 1 1 . . . . . . .
Green Sandpiper 1 1 . . . 1 . . 1 . . . . .
Common Sandpiper 1 5 6 1 1 3 4 . . 2 4 4 3 1
Turnstone 1 1 1 1 1 . . . . . 1 . . .
Black-headed Gull 29 24 22 20 21 19 20 4 20 21 25 29 38 37
Common Gull 3 6 3 8 6 6 3 . 3 6 3 6 6 6
Lesser Black-backed Gull 47 57 64 73 77 92 91 11 91 92 93 112 133 140
Herring Gull 61 76 86 98 106 106 107 15 108 115 122 156 182 207
Great Black-backed Gull 9 7 13 9 18 14 14 3 12 9 10 18 16 37
Kittiwake 3 1 1 1 2 1 1 . . . . 1 1 1
Sandwich Tern . 1 1 2 2 1 1 . 1 1 1 1 1 1
Common Tern 1 2 2 1 3 1 3 1 1 1 1 1 2 1
Arctic Tern . . . . . 1 . . . . . . . .
Black Tern . . 1 . 2 . . . . . . . . .
Guillemot . . 1 . 1 . . . . . . 1 . .
Razorbill . . 1 . 1 . . . . . . 1 1 1
Feral Pigeon 46 47 59 70 70 56 64 13 55 63 67 63 79 82
Stock Dove 77 82 99 93 94 109 104 6 98 107 107 111 149 160
Woodpigeon 197 229 246 283 285 300 284 35 277 285 294 330 432 448
Collared Dove 107 132 131 165 155 173 159 18 162 167 171 174 229 244
Turtle Dove 8 5 11 5 6 5 5 . 3 4 5 8 4 4
Cuckoo 100 103 116 101 84 95 87 6 60 57 65 68 79 91
Barn Owl 1 2 . . 3 2 3 1 4 1 5 3 10 6
Little Owl 9 11 13 16 6 13 13 1 14 9 11 13 14 11
Tawny Owl 6 10 9 6 14 11 8 . 10 10 7 17 10 22
Long-eared Owl . . . . 1 . . . . . . . . .
Nightjar 1 . . 1 . . . . . . . . 1 .
Swift 116 134 119 128 142 135 137 20 111 119 122 136 165 163
Kingfisher 4 6 6 6 10 8 4 2 10 11 4 7 19 14
Green Woodpecker 71 78 85 101 114 110 119 10 95 121 117 136 176 162
Great Spotted Woodpecker 54 63 83 103 90 102 106 7 101 117 139 154 222 241
Lesser Spotted Woodpecker 2 1 2 3 3 4 1 . 3 4 1 2 5 4
Woodlark 2 2 2 3 1 2 2 . 1 1 2 4 5 5
Skylark 148 159 172 187 190 205 183 16 171 178 179 211 276 293
Sand Martin 5 5 10 4 2 6 7 2 8 4 4 10 9 10
Swallow 157 178 203 220 224 251 241 19 225 239 255 285 388 392
House Martin 88 103 113 125 121 131 129 18 125 128 145 138 196 207
Tree Pipit 10 9 10 13 10 12 14 2 9 13 10 12 18 12
Meadow Pipit 32 26 38 38 42 41 34 4 39 43 45 59 70 65
Rock Pipit 3 1 2 1 2 1 1 . 1 1 . 1 3 5
Yellow Wagtail 5 6 11 7 4 3 6 . 6 1 6 6 11 6
Grey Wagtail 23 28 20 19 19 19 31 4 40 36 29 32 39 45
Pied Wagtail 91 101 127 120 130 129 132 11 130 129 137 171 185 211
Dipper 2 3 4 1 4 6 2 . . 3 5 8 11 7
Wren 193 225 235 263 282 295 280 33 272 284 292 326 417 442
Dunnock 172 202 208 232 244 262 246 30 252 265 270 294 387 397
Robin 187 209 235 271 270 292 274 33 272 276 287 316 409 437
Nightingale 1 3 2 3 3 1 1 1 3 . 3 2 2 4
Black Redstart . . . 1 . . . . . . . . 1 1
Redstart 8 7 5 11 6 5 9 1 4 4 5 8 8 10
Whinchat 4 6 5 6 6 8 5 . 5 3 3 7 8 7
Stonechat 9 12 13 7 14 16 19 3 24 25 29 34 34 38
Wheatear 9 9 19 17 16 24 19 2 21 17 28 27 32 37
Ring Ouzel 2 1 . 1 . 2 1 . . . 2 . 2 .
Blackbird 200 233 245 280 289 301 285 35 277 288 297 328 433 452
Fieldfare . 4 1 3 3 1 6 . 3 6 4 . 4 4
Song Thrush 150 178 194 210 220 251 230 20 231 245 255 274 363 373
Redwing . . 2 . . 1 1 . 1 . . . 2 2
Mistle Thrush 89 100 106 121 111 130 114 11 111 131 119 124 151 162
Cettis Warbler 1 3 3 2 1 4 3 . 3 3 4 6 8 10
Grasshopper Warbler 1 8 5 4 10 4 8 1 6 4 8 8 13 5
Sedge Warbler 15 19 25 32 21 26 23 . 27 17 29 30 43 48
Marsh Warbler . 1 . . 1 . . . . . . . . .
Reed Warbler 6 8 14 10 12 9 14 . 15 15 17 18 31 33
Blackcap 129 141 155 187 199 226 217 23 215 217 238 261 329 337
Garden Warbler 37 39 49 59 59 63 60 8 52 53 49 70 82 83
Lesser Whitethroat 29 19 23 23 30 39 32 2 32 38 36 37 60 64
Whitethroat 99 123 156 167 165 170 176 18 155 148 182 194 253 271
Dartford Warbler 2 1 1 1 2 1 1 1 1 1 2 3 5 6
Wood Warbler 7 5 11 9 9 11 8 1 5 8 7 6 9 9
Chiffchaff 146 178 186 227 234 226 230 25 229 251 251 260 324 378
Willow Warbler 120 140 139 167 155 167 159 14 121 116 130 141 196 178
Goldcrest 57 77 75 84 92 113 116 10 114 126 126 159 173 181
Firecrest . . . . . 1 . . . . . . . .
Spotted Flycatcher 24 16 28 27 34 38 30 3 23 25 35 27 48 36
Pied Flycatcher 3 2 2 1 1 1 5 . 2 1 . 2 2 1
Bearded Tit . . . 1 . . . . . . . . . .
Long-tailed Tit 76 83 89 78 89 101 103 13 106 116 127 127 163 213
Marsh Tit 19 18 20 35 17 28 24 2 31 30 32 42 32 36
Willow Tit 7 7 6 7 6 11 8 . 2 8 4 4 8 4
Coal Tit 51 52 63 67 67 78 77 11 87 93 97 118 127 130
Blue Tit 180 214 236 272 277 285 269 32 268 271 286 319 411 431
Great Tit 167 194 209 248 256 273 263 28 248 266 280 313 398 419
Nuthatch 46 33 46 55 52 62 55 3 69 71 79 91 118 112
Treecreeper 30 31 42 44 36 42 37 2 43 54 48 53 63 55
Golden Oriole . . . 1 . . . . . 1 . . . .
Red-backed Shrike . . . . . . . . . . . . . 1
Jay 62 59 68 85 70 82 81 10 89 100 97 99 148 152
Magpie 164 194 218 238 233 252 240 25 237 240 255 278 350 368
Chough . . . . . . . . . . . . . 1
Jackdaw 152 171 193 219 208 228 216 29 203 211 228 247 327 350
Rook 132 156 167 185 195 195 174 18 171 179 182 197 267 289
Carrion Crow 193 222 236 264 270 290 279 35 271 285 297 323 418 446
Raven 13 19 21 25 24 30 30 1 38 39 40 60 79 110
Starling 150 176 185 200 201 211 197 25 181 176 192 185 229 240
House Sparrow 129 151 163 185 186 203 188 24 186 189 207 217 279 299
Tree Sparrow 6 5 3 5 4 5 2 . 2 1 3 4 3 2
Chaffinch 195 229 246 278 285 299 283 33 273 286 295 328 428 443
Brambling . . 1 1 1 1 . . . . . 1 1 1
Serin 1 . . . . . . . . . . . . .
Greenfinch 146 186 190 219 228 247 234 28 229 243 257 277 370 371
Goldfinch 132 149 171 182 160 194 201 24 203 214 217 247 296 341
Siskin 2 4 2 4 7 8 7 . 7 5 5 5 17 21
Linnet 110 128 149 160 138 165 165 14 154 175 166 186 215 214
Lesser Redpoll . 2 3 2 5 4 6 . 6 4 8 10 14 10
Crossbill 2 1 1 4 4 1 4 . 2 6 1 2 9 2
Bullfinch 77 65 80 99 64 75 61 4 93 97 92 125 114 139
Hawfinch . . 1 . . 1 . . . . . . . .
Yellowhammer 133 141 130 153 160 158 139 15 141 141 138 158 195 200
Cirl Bunting 3 1 3 3 3 2 . . 2 1 2 2 4 6
Reed Bunting 16 22 26 28 25 26 25 1 20 28 26 32 39 47
Corn Bunting 18 16 18 25 21 21 15 3 14 9 14 19 31 28
Black Swan . . 1 1 1 1 1 . 1 1 1 1 1 1
Bar-headed Goose . . . . . . . . 1 . 2 . . 1
Muscovy Duck . . 1 . . . . . . . . . . .
Carolina Wood Duck . . . 1 . . . . 1 1 . . . .
Peafowl . . 1 4 1 1 1 1 1 2 3 4 5 5
Helmeted Guineafowl . . . . . . . . . 2 . 1 3 .
Harris Hawk . . 1 1 1 . . . . . . . . .
Total number of Species 130 146 156 151 150 147 143 88 138 145 142 145 155 151

 


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