Number of 1km squares in which each species
was recorded in Yorkshire and the Humber



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 83 87 105 131 137 142 133 21 125 133 148 170 191 222
Mute Swan 4 6 8 13 9 12 10 4 3 4 10 10 11 12
Pink-footed Goose . . . 1 1 . . . . . . 1 . .
Greylag Goose 6 5 2 11 10 13 12 2 19 22 22 29 34 48
Feral/hybrid Goose . . . . . . . . . . 2 . . 1
Canada Goose 7 10 12 14 16 15 18 3 16 19 18 28 36 38
Barnacle Goose . . . . . . . . . 1 . . . .
Shelduck 2 2 4 6 7 7 9 . 7 8 10 9 15 12
Mandarin . . . . . . . . . 1 . . . 1
Wigeon 2 1 1 . . . 1 . 1 . 2 1 . .
Gadwall 2 . 1 . 4 2 2 2 . 2 3 . 1 1
Teal 2 1 1 2 2 . 1 1 . . 1 1 2 1
Mallard 31 31 42 63 66 81 78 12 68 69 81 82 104 115
Feral/hybrid mallard type . . . . . . . . . . . 1 2 1
Pintail . . . 1 . . . . . . . . . .
Garganey . . . . . . 1 . . 1 . . . .
Shoveler . 1 . 2 2 1 2 . . . 1 1 . .
Pochard . . 1 2 1 . 1 1 . . 1 1 1 1
Tufted Duck 4 5 9 8 7 12 6 2 3 4 6 7 8 10
Scaup . . 1 . . . . . . . . . . .
Goldeneye . . . 1 1 . 1 . . . 1 1 . .
Goosander 1 4 4 4 5 4 4 1 3 3 4 1 7 5
Ruddy Duck . 1 1 2 2 . 1 1 . . . . 1 .
Red Grouse 17 17 16 19 21 18 20 1 24 28 31 30 40 39
Black Grouse . . . . . . . . 2 . 1 . 1 2
Red-legged Partridge 18 18 25 41 39 41 35 5 31 34 44 46 55 64
Grey Partridge 18 17 24 37 24 25 22 2 21 27 30 22 38 44
Quail . . 1 1 1 2 1 . 1 2 1 . . .
Pheasant 48 55 60 85 89 97 89 9 73 95 113 133 151 171
Little Grebe 1 3 1 4 4 4 3 1 1 . . 2 3 3
Great Crested Grebe 1 2 1 3 3 3 3 1 . 1 3 2 2 3
Black-necked Grebe . . . . . 1 . . . . . . . .
Fulmar . . . . . 1 1 . 1 . . . 1 .
Gannet . . . . . . . . 1 1 1 . 1 1
Cormorant 2 2 4 7 5 6 9 2 7 8 13 11 11 14
Bittern . . . . . . . . . . 1 1 1 .
Grey Heron 8 13 17 22 24 27 25 6 34 33 37 40 51 43
Spoonbill . . 1 . . . . . . . . . . .
Red Kite . . . . . . 1 . . 2 3 1 6 6
Marsh Harrier . 1 . . . 2 2 . 1 3 2 4 3 1
Hen Harrier . . . . 1 . . . . . 1 . . .
Goshawk 2 1 1 1 1 . . . 1 1 1 2 1 3
Sparrowhawk 10 4 11 16 15 15 15 5 16 11 19 23 30 17
Buzzard 1 . 2 4 6 3 4 . 3 11 5 10 18 15
Osprey . . . 1 . . . . . . . . . .
Kestrel 29 26 27 41 39 35 36 9 35 43 39 47 56 64
Merlin 3 3 3 4 2 1 3 . 3 2 1 2 5 2
Hobby . 1 . 1 . . . . . 1 . . 1 .
Peregrine 3 1 2 1 . 1 1 . 3 1 . 4 4 4
Water Rail . . . . . . 1 . . . . . . .
Moorhen 13 18 17 38 37 43 34 6 30 32 33 37 46 51
Coot 4 5 12 11 13 19 13 3 7 11 9 15 16 17
Crane . . . . . . . . . . . . . 1
Oystercatcher 6 10 14 22 28 24 22 1 24 35 39 39 49 44
Avocet . . . . . . . . . . . . . 1
Little Ringed Plover . . 1 2 3 1 2 1 1 3 2 2 1 1
Ringed Plover . 1 . 1 1 . . 1 . 1 2 2 2 .
Dotterel . . . 1 . . . . . . . . . .
Golden Plover 13 14 13 13 19 13 20 . 23 23 23 23 31 26
Grey Plover . . . 1 . . . . . . . . . .
Lapwing 39 48 58 60 72 81 74 9 69 81 86 101 118 125
Sanderling . . . . . 1 1 . 1 . 1 . . .
Dunlin 1 2 2 2 2 2 4 1 2 3 1 1 1 2
Ruff . . . . . . . . . . . 1 . .
Snipe 14 13 12 18 17 19 20 1 21 26 30 22 33 37
Woodcock . 3 . 1 . . 1 1 1 2 2 . 3 4
Black-tailed Godwit . . . 1 . 1 . . . . . . 1 .
Bar-tailed Godwit . . . . . . . . . . . . 1 1
Whimbrel . . . 1 . . 1 . . . 2 . 1 1
Curlew 51 48 53 57 66 67 69 1 63 70 80 82 94 105
Redshank 4 5 8 6 10 8 9 1 5 11 14 13 10 12
Green Sandpiper . . . . . 1 . . . . . . . .
Common Sandpiper 5 4 7 7 6 4 7 . 5 6 5 5 6 8
Turnstone . . . . 1 . . . . . . . . .
Black-headed Gull 34 35 42 46 47 45 44 11 45 39 39 48 59 53
Common Gull 7 6 9 8 8 7 6 3 8 8 8 5 12 14
Lesser Black-backed Gull 12 11 19 18 27 25 21 3 23 26 15 24 21 29
Herring Gull 11 11 14 27 29 28 25 2 18 19 23 33 28 32
Great Black-backed Gull . . 3 9 6 7 3 1 3 4 3 3 5 4
Kittiwake . . . . . . 1 . . . . . . .
Sandwich Tern . . . . 1 1 1 . 1 1 1 1 1 1
Common Tern . . . 1 1 3 1 1 1 1 2 2 2 .
Arctic Tern 1 1 . 1 . 1 1 2 . 1 1 . . 1
Little Tern . . . . . . . . . . 1 . . .
Guillemot . . . . 1 . . . . 1 . . 1 1
Razorbill . . . . . . . . . 1 . . 1 .
Feral Pigeon 23 32 28 53 57 55 49 14 52 57 53 62 63 66
Stock Dove 22 24 27 36 32 31 31 7 40 48 41 54 50 57
Woodpigeon 63 75 87 116 117 125 113 21 102 117 129 152 161 194
Collared Dove 29 34 44 60 68 71 58 17 57 62 67 87 81 87
Turtle Dove 1 1 5 4 5 5 3 . 3 3 2 3 4 2
Cuckoo 33 36 36 39 34 36 32 5 32 32 51 43 46 42
Barn Owl . 1 1 1 1 . 1 . 1 3 3 7 10 9
Little Owl 1 4 7 11 7 5 8 1 6 6 12 9 18 12
Tawny Owl 2 2 4 9 8 7 6 . 5 7 6 6 3 6
Long-eared Owl . . . . . 1 . . 1 . . 1 . .
Short-eared Owl 2 3 8 . 3 6 3 . 6 5 6 7 9 4
Nightjar . . . . . . . . . 1 . . 1 .
Swift 46 43 44 60 65 71 68 17 57 65 65 96 86 90
Kingfisher . 2 2 2 1 1 1 1 3 5 1 5 3 .
Green Woodpecker 3 8 9 11 9 12 10 3 12 15 11 14 21 20
Great Spotted Woodpecker 8 15 11 15 21 25 31 4 29 27 35 42 44 51
Lesser Spotted Woodpecker 1 1 1 3 1 . . . . . . . . 2
Skylark 64 68 74 99 98 106 98 13 84 95 108 117 144 159
Sand Martin 4 7 6 10 9 13 12 3 9 11 13 14 16 14
Swallow 65 67 82 108 105 119 105 17 95 101 121 135 150 170
House Martin 28 32 34 47 48 56 53 11 50 57 70 74 67 64
Tree Pipit 3 9 4 2 6 3 8 1 5 8 3 6 5 4
Meadow Pipit 46 47 49 56 60 58 62 5 59 63 71 79 92 97
Yellow Wagtail 11 14 16 14 17 19 20 4 18 14 20 16 24 24
Grey Wagtail 5 7 8 9 4 11 14 4 10 16 17 12 14 26
Pied Wagtail 39 55 52 71 73 85 85 15 67 76 81 95 100 109
Dipper 4 1 2 2 3 4 4 . . 3 8 6 6 7
Wren 64 72 83 103 121 120 117 19 114 123 134 149 163 199
Dunnock 50 54 71 93 95 100 89 18 85 88 100 121 120 152
Robin 57 63 77 100 99 112 99 18 91 101 113 132 139 170
Black Redstart . 1 . . . . . . . . . . . .
Redstart 4 6 8 12 13 9 10 . 10 10 8 11 17 13
Whinchat 3 4 . 1 . 2 1 . 2 2 3 2 2 4
Stonechat . 1 . 1 1 1 1 . 2 4 4 4 7 11
Wheatear 19 17 18 20 24 24 16 2 25 29 29 32 29 48
Ring Ouzel 4 3 3 2 6 3 3 . 6 4 7 5 8 11
Blackbird 64 71 87 116 116 127 116 21 105 119 125 151 160 186
Fieldfare 1 4 . 3 2 3 2 . 3 6 1 3 3 2
Song Thrush 37 46 53 68 75 79 72 18 66 82 89 104 121 129
Redwing . 1 . . . . 1 . . 2 . 1 . 1
Mistle Thrush 31 35 45 51 67 74 61 12 61 74 61 78 73 85
Grasshopper Warbler 2 2 . 2 2 3 3 . . 1 . . 1 2
Sedge Warbler 8 10 13 18 12 18 17 4 9 15 14 13 10 17
Reed Warbler 2 2 . 3 2 4 4 . 1 4 5 4 10 5
Blackcap 28 29 36 51 56 57 45 14 53 54 67 82 85 85
Garden Warbler 10 8 20 15 18 16 26 4 10 11 18 21 21 19
Lesser Whitethroat 8 7 7 5 5 6 13 3 12 7 6 5 15 18
Whitethroat 35 36 41 68 63 59 62 13 47 52 64 73 83 91
Wood Warbler 1 2 . . 3 1 2 1 1 2 1 3 1 2
Chiffchaff 17 18 20 36 38 42 31 11 37 47 60 57 47 67
Willow Warbler 55 59 74 96 99 99 94 15 68 72 80 86 95 105
Goldcrest 9 12 14 8 12 13 18 2 14 16 13 19 22 25
Spotted Flycatcher 7 11 6 10 10 9 7 . 9 8 7 12 7 9
Pied Flycatcher . 1 1 1 2 1 1 . 2 1 1 2 3 1
Long-tailed Tit 14 14 23 27 33 29 28 7 34 34 42 45 47 59
Marsh Tit 1 7 4 3 3 3 2 1 2 3 1 2 3 5
Willow Tit 4 3 8 6 5 4 4 4 2 6 3 5 6 7
Coal Tit 11 15 18 21 19 20 19 5 26 23 27 36 35 44
Blue Tit 59 63 78 107 107 112 102 20 97 108 116 136 140 170
Great Tit 43 53 69 86 88 86 87 18 77 90 93 119 129 148
Nuthatch 4 3 7 4 6 6 5 2 9 11 8 8 7 21
Treecreeper 6 4 4 7 9 13 9 1 10 7 10 10 18 18
Jay 10 12 6 11 12 12 14 3 12 14 14 12 19 24
Magpie 44 41 54 67 84 88 79 18 70 74 79 90 96 117
Jackdaw 41 48 57 76 75 81 83 12 66 90 90 100 108 112
Rook 51 53 64 84 84 84 80 9 64 80 82 101 101 114
Carrion Crow 73 74 90 115 125 127 114 19 109 114 132 153 173 192
Hooded Crow . . . . . . . . . . . . 1 .
Raven . 1 1 1 . . 3 . 2 3 1 1 5 6
Starling 62 58 73 101 101 109 96 19 95 98 100 121 114 129
House Sparrow 42 41 56 79 81 82 76 17 69 75 77 97 92 107
Tree Sparrow 10 11 14 16 17 18 18 3 14 20 28 28 39 48
Chaffinch 65 70 84 113 113 122 115 17 104 118 131 153 168 196
Brambling . . . . 1 . . . . 1 . 2 1 .
Greenfinch 42 40 50 77 83 85 77 20 77 85 91 116 124 123
Goldfinch 38 39 54 63 68 73 75 17 71 71 80 105 104 132
Siskin 1 2 4 6 3 3 3 1 1 . 4 4 5 6
Linnet 45 46 57 73 82 83 72 13 61 81 72 94 102 95
Twite 2 1 2 2 2 4 1 . 3 2 1 . 2 2
Lesser Redpoll 5 5 3 6 6 3 4 . 6 6 3 4 5 2
Crossbill 1 . . 1 . . . . 1 1 . 1 3 1
Bullfinch 10 6 11 15 11 14 11 5 10 14 12 17 20 25
Yellowhammer 36 44 50 71 65 73 63 8 51 60 68 89 87 113
Reed Bunting 14 15 18 20 21 22 22 5 21 24 28 40 56 56
Corn Bunting 8 7 9 20 16 19 16 1 11 19 14 14 17 20
Carolina Wood Duck . . . . . . . . . . 1 . . .
Peafowl . . . . . . . . . . 4 3 3 1
Helmeted Guineafowl . . . . . . . . . . . 1 . 2
Total number of Species 113 123 117 132 127 124 134 98 123 132 135 132 140 136

 


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