Number of 1km squares in which each species
was recorded in Wales



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 (fewer 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 08 09
Total No squares surveyed 122 121 116 138 192 223 213 22 215 214 254 271 270 266 230 229
Mute Swan 3 4 4 5 9 10 13 1 16 12 16 15 10 13 11 19
Pink-footed Goose . . . . . . . . . 1 . . . . . .
Greylag Goose 2 1 3 3 2 5 6 . 5 8 4 8 12 10 10 8
Feral/hybrid Goose . . . 1 . . . . . . 2 . 1 . 1 1
Canada Goose 3 9 9 6 11 16 22 1 21 20 36 32 40 41 35 38
Brent Goose . . . . . . . . . . . . 1 . . .
Shelduck 5 6 7 7 8 7 9 . 7 9 9 10 16 7 13 12
Mandarin . 1 . . 1 1 2 . 1 . 1 . 1 . 1 .
Wigeon . 2 . 1 . . 1 . 1 . . . . . . .
Gadwall . . . . 1 1 1 . 1 . . . . 1 1 .
Teal 1 2 1 . 1 1 3 . 2 1 2 4 3 2 1 2
Mallard 38 40 32 42 61 73 65 7 77 57 77 86 86 78 71 72
Feral/hybrid mallard type . . . . . . . . . . . . 2 1 . .
Pintail . . . . . 1 . . . . . . . . . .
Shoveler 1 . . . . . . . . 1 . 1 1 2 1 .
Red-crested Pochard . . . . 1 . 1 . . . . . . . . .
Pochard . . . . . . 1 . 1 1 . 1 . 1 1 1
Tufted Duck 2 2 3 3 4 3 4 . 3 3 3 6 4 2 3 5
Eider . . . . . . . . . . . . . 1 . .
Common Scoter . . 1 . . . . . . . . . . . . .
Goldeneye . . . . . . . . . . . 1 . . . .
Red-breasted Merganser 1 1 . 2 1 2 1 . 1 . 1 2 2 1 . 1
Goosander 6 3 4 5 8 4 4 1 6 6 7 8 5 5 5 7
Ruddy Duck . . . . 2 1 1 . 1 2 3 2 1 . . .
Helmeted Guineafowl . . . . . . . . . . . 1 . . . .
Red Grouse 1 . 2 1 4 7 4 1 5 5 4 5 4 3 3 3
Black Grouse . . . . . 1 1 . 2 . 2 . 1 . 2 2
Red-legged Partridge . . . 1 1 1 4 1 2 4 6 5 3 10 14 10
Grey Partridge 1 2 1 1 1 2 1 . 2 3 1 3 3 2 2 .
Quail . . . . 1 . . . . . 1 . . . . .
Reeves Pheasant . . 1 . 2 . . . . . . . . . . .
Pheasant 53 50 48 59 73 78 82 2 76 84 109 125 131 136 107 99
Golden Pheasant . . . . . . . . . 1 . . . . . .
Peafowl . . . . . . . . . . 1 . . 2 1 2
Little Grebe 2 1 . 1 3 3 4 . 3 6 5 8 5 5 7 7
Great Crested Grebe 1 1 1 1 3 1 4 . 1 2 1 3 3 4 1 2
Fulmar 2 3 2 2 4 4 3 . 9 6 6 7 6 3 4 4
Manx Shearwater . . . . . . . . 1 . . . . . . .
Gannet . 1 1 1 1 2 1 . 3 2 3 2 5 2 1 2
Cormorant 5 10 13 9 23 21 19 4 22 19 25 22 24 16 19 26
Shag 1 1 2 1 1 2 . . 3 1 4 3 3 2 2 2
Little Egret . . . . 1 . . . 1 1 2 2 3 1 4 5
Grey Heron 21 25 26 35 41 48 46 2 47 54 53 58 47 50 45 40
Honey Buzzard . . . . . . . . . 1 . . . . . .
Red Kite 8 7 7 5 6 12 9 1 15 14 24 31 33 26 26 35
Marsh Harrier . 1 . . . . . . . . . 1 . . . .
Hen Harrier 1 1 1 2 . 1 1 . 2 4 2 1 4 1 2 1
Goshawk . 1 1 2 3 5 6 2 5 7 3 5 4 9 3 6
Sparrowhawk 10 10 12 13 33 21 19 . 23 25 16 25 29 32 20 21
Buzzard 80 78 75 86 113 150 151 10 155 142 160 177 180 188 154 147
Osprey . . . . . . . . 1 . 1 . . . . .
Kestrel 17 15 14 18 24 27 22 . 26 22 26 35 31 31 23 12
Merlin 1 . . 2 1 . 3 . 4 3 1 . 1 . 2 1
Hobby 1 1 . 1 2 1 . . 3 1 . 1 1 3 1 2
Peregrine 11 6 8 3 9 8 8 . 5 4 14 16 7 8 9 5
Water Rail . . . . . . . . . . . 2 1 3 . 1
Spotted Crake . . . . . . . . . . . . 1 . . .
Moorhen 13 10 12 16 23 27 22 1 18 17 29 29 20 27 19 20
Coot 6 6 5 4 6 9 12 . 9 11 11 12 11 9 11 10
Oystercatcher 4 4 6 7 7 9 7 . 10 11 9 11 14 12 10 10
Little Ringed Plover 1 . . 1 1 . . . 1 . . . . 1 . .
Ringed Plover 1 1 1 1 2 3 1 1 2 3 2 1 1 2 2 1
Golden Plover . 1 . 2 2 3 . . . . . 1 1 2 3 4
Grey Plover . . . . . . . . . . . . 1 . . .
Lapwing 24 14 16 15 14 16 17 . 15 14 14 20 19 16 15 12
Knot . . . . . . . . . . . . 1 . . .
Sanderling . . . . . . . . . . 1 . . . . .
Dunlin . 1 1 1 . . 3 . . 1 2 1 . 2 . 1
Snipe 4 5 6 2 2 6 4 . 9 7 6 3 6 3 7 2
Woodcock . . . . . . . . . . 1 1 . . . .
Black-tailed Godwit . . . . . . . . . . 1 . 1 . . 1
Bar-tailed Godwit . . . . . . . . 1 . . . . . . .
Whimbrel 3 5 3 2 2 3 2 . 3 . 1 3 2 2 6 9
Curlew 33 30 33 32 37 52 53 . 44 33 40 37 35 36 37 23
Common Sandpiper 2 3 4 5 3 3 7 1 2 2 5 5 3 1 4 1
Green Sandpiper 1 1 . . . . . . . . 1 . . . . .
Spotted Redshank . . . . . . . . . . . 1 . . . .
Greenshank . 1 . . . 1 . . . . . . 1 . 1 .
Redshank 1 1 1 . 1 3 3 . 3 3 4 5 2 5 3 1
Turnstone . . . . 1 1 1 . . . 1 . . . . .
Kittiwake . . . . . . . . . . 1 . . . 1 .
Black-headed Gull 17 14 13 13 22 24 23 1 19 17 16 15 16 17 21 13
Common Gull 2 1 5 2 3 4 4 . 4 4 4 1 4 6 5 2
Lesser Black-backed Gull 22 36 30 39 52 73 58 10 68 71 68 78 73 84 80 70
Herring Gull 36 35 35 46 67 84 85 11 90 83 95 116 113 119 100 104
Great Black-backed Gull 5 5 8 14 16 13 11 . 14 13 16 12 20 22 20 20
Sandwich Tern . 1 . 2 2 1 . . 1 1 3 3 3 2 1 .
Common Tern . . . . . . . . . 1 . . 1 . . .
Roseate Tern . . . . 1 . . . . . . . . . . .
Arctic Tern . . . . . . . . . . . . 1 . . .
Guillemot . . . . . . . . 1 . . . . . 1 .
Razorbill . . . . 1 2 . . . . 2 3 . . 1 .
Black Guillemot 1 1 1 1 1 1 1 . 1 1 1 1 1 1 1 1
Feral Pigeon 15 14 21 25 31 32 36 8 37 31 39 43 40 40 39 39
Stock Dove 13 19 20 23 36 25 24 1 27 27 31 43 36 33 28 34
Woodpigeon 105 103 105 123 172 197 182 17 183 184 216 243 238 232 196 201
Collared Dove 35 27 31 40 66 71 63 8 62 68 88 85 94 97 86 88
Turtle Dove . . 1 . . . . . . 2 . . 1 . . .
Cuckoo 52 37 51 47 64 72 58 4 60 46 63 60 70 48 59 45
Barn Owl . 1 . . 1 . 1 . . . 1 1 1 . . 1
Little Owl 3 1 2 4 4 4 7 1 2 1 1 4 . 4 2 4
Tawny Owl 7 5 6 7 11 11 7 1 10 2 7 11 6 9 12 8
Short-eared Owl . . . 1 . . . . 2 1 1 . . 1 . .
Nightjar . . . . . 1 . . . . . . . . . .
Swift 34 47 36 37 75 77 75 8 71 77 71 74 90 64 71 61
Kingfisher 2 2 1 6 3 2 3 . 4 7 4 5 1 2 1 6
Green Woodpecker 23 30 29 34 52 40 49 . 38 41 57 63 49 65 46 47
Great Spotted Woodpecker 26 36 28 38 56 62 57 4 63 63 79 102 86 117 99 102
Lesser Spotted Woodpecker . 2 3 . 2 3 1 . 2 2 1 2 . 2 . 1
Skylark 68 66 66 80 102 121 106 6 100 93 115 127 128 130 107 102
Sand Martin 4 5 9 8 7 13 9 3 11 7 12 13 8 8 10 9
Swallow 97 87 93 115 150 189 171 15 165 156 196 220 220 222 191 181
House Martin 48 54 57 57 85 103 98 8 90 91 90 98 110 90 92 79
Tree Pipit 25 18 25 27 40 43 41 5 33 27 33 35 39 32 27 22
Meadow Pipit 55 58 54 55 82 101 98 8 93 86 100 105 101 105 85 91
Rock Pipit 2 3 2 2 3 5 4 . 6 6 9 6 7 5 4 5
Yellow Wagtail 1 1 . 4 . 1 5 . 3 1 4 . 3 1 1 3
Grey Wagtail 21 23 15 12 23 28 24 3 24 23 29 29 32 27 32 33
Pied Wagtail 75 65 68 77 102 129 117 7 116 119 134 152 143 143 117 113
Dipper 2 6 6 7 10 9 8 1 6 5 9 9 5 7 7 11
Wren 114 111 103 121 178 208 202 18 204 196 226 249 248 242 208 206
Dunnock 79 80 77 99 142 159 140 12 145 154 179 196 185 190 171 167
Robin 107 108 106 123 174 196 197 18 194 191 227 250 243 237 210 206
Nightingale . 1 1 . . . . . . . 1 1 . . . .
Redstart 45 43 42 48 60 63 58 3 58 49 58 59 65 66 53 59
Whinchat 17 13 15 13 24 18 21 4 18 19 19 23 22 23 18 12
Stonechat 11 13 11 14 23 33 34 . 37 40 46 62 53 56 51 39
Wheatear 32 34 33 28 45 66 54 1 54 50 58 68 69 55 58 51
Ring Ouzel 7 3 1 . 3 3 2 . 3 3 5 3 4 3 3 2
Blackbird 109 108 101 124 173 203 195 21 196 195 233 253 251 247 210 213
Fieldfare 2 3 . 3 1 . 2 . 3 5 1 1 3 . 1 .
Song Thrush 91 88 82 100 148 166 166 14 163 168 192 215 222 214 188 185
Redwing . . . . . . . . . 1 . 1 . . 1 .
Mistle Thrush 55 51 50 66 100 116 105 10 113 97 115 122 122 121 110 102
Cettis Warbler . . . . 2 1 1 . 2 2 2 2 3 2 2 2
Grasshopper Warbler 11 7 14 8 20 8 10 1 11 15 14 13 16 16 14 15
Sedge Warbler 9 13 17 18 20 23 25 . 27 17 24 27 32 22 25 24
Marsh Warbler . . . 1 . . . . . . . . . . . .
Reed Warbler 1 1 1 3 3 3 3 2 6 3 4 6 7 9 9 9
Blackcap 50 50 52 80 111 113 111 11 116 112 142 148 148 139 125 132
Garden Warbler 46 39 36 50 65 65 52 5 56 49 65 54 51 62 59 62
Lesser Whitethroat 8 8 6 5 11 9 11 . 10 8 14 10 10 14 11 12
Whitethroat 39 43 48 54 74 85 75 8 70 66 94 102 101 101 93 88
Dartford Warbler . . . . . . . . . . . 1 1 . 1 .
Wood Warbler 26 16 19 23 28 22 25 3 21 11 21 18 21 18 13 19
Chiffchaff 64 67 68 89 132 115 110 12 123 147 171 175 162 172 160 148
Willow Warbler 103 103 98 115 166 183 162 12 150 151 185 185 183 185 160 160
Goldcrest 45 49 45 59 83 91 89 6 82 75 96 112 100 102 87 63
Firecrest . . . . . . . . . 1 1 . . 1 . .
Spotted Flycatcher 16 22 15 21 22 30 32 2 20 20 26 27 32 21 18 18
Pied Flycatcher 24 22 19 24 25 31 26 . 27 21 21 21 16 17 13 17
Long-tailed Tit 34 39 32 31 58 64 65 4 57 49 56 82 61 74 73 57
Blue Tit 100 100 98 115 156 184 163 16 176 184 206 231 217 218 188 195
Great Tit 88 94 89 117 147 174 159 10 169 169 201 219 212 218 184 189
Coal Tit 41 35 36 55 75 73 67 5 91 70 79 87 85 81 73 89
Willow Tit 6 2 7 9 10 8 6 . 3 7 8 9 6 6 2 2
Marsh Tit 4 14 10 9 14 10 19 2 13 11 17 16 18 13 7 14
Nuthatch 33 37 39 54 66 59 60 3 80 62 75 97 79 85 70 86
Treecreeper 25 29 28 29 43 51 46 4 47 40 44 44 41 47 40 32
Woodchat Shrike . . . 1 . . . . . . . . . . . .
Jay 41 25 36 52 70 62 70 8 67 71 85 88 93 88 84 81
Magpie 98 91 94 110 163 175 168 16 157 162 185 205 196 188 167 172
Chough 1 2 1 2 3 4 3 . 4 7 4 4 5 8 1 6
Jackdaw 74 75 75 92 133 143 140 12 138 137 164 176 173 178 149 146
Rook 53 50 49 55 71 95 86 5 85 76 89 87 94 86 85 69
Carrion Crow 114 111 108 132 185 214 200 19 206 200 237 255 253 252 216 219
Hooded Crow . . 1 . . . 1 . . . . . . . . .
Carrion/Hooded (intermediate) . . . . . . . . . . . . . . . 1
Raven 51 41 51 53 77 72 94 3 84 90 103 120 112 121 95 86
Starling 63 56 48 65 99 101 95 13 82 78 95 89 90 88 69 71
House Sparrow 64 66 59 74 107 122 112 11 114 128 143 161 152 151 133 135
Tree Sparrow 2 1 3 6 5 4 4 . 6 4 4 4 6 2 3 2
Chaffinch 115 111 105 130 181 204 196 19 195 196 236 252 254 247 208 212
Brambling 1 . 1 1 . . . . . . 1 . . . . .
Greenfinch 49 52 44 75 99 114 109 9 114 108 131 150 154 140 132 126
Goldfinch 62 64 60 81 109 121 123 8 132 118 150 177 141 157 144 142
Siskin 16 11 13 19 25 17 25 5 19 20 24 30 32 23 29 30
Linnet 55 53 49 72 95 98 96 4 97 90 118 119 111 96 85 92
Twite . . . . . . . . . . . . 1 . . .
Lesser Redpoll 13 12 13 14 23 23 19 2 20 15 20 28 22 23 22 16
Crossbill 10 1 3 4 6 3 3 1 5 5 5 6 6 3 6 3
Bullfinch 43 34 41 48 48 45 54 3 60 63 88 97 65 69 61 63
Hawfinch . . . 1 . 2 1 . . . 2 1 1 . . .
Yellowhammer 33 31 33 41 39 43 40 . 36 33 34 38 38 34 29 26
Reed Bunting 16 12 12 11 19 30 27 2 23 28 33 36 37 41 32 31
Corn Bunting . . . . . . 1 . . . . . . . . .
Total number of Species 121 128 121 128 134 132 133 79 136 134 144 139 143 134 136 131

 


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