BBS population declines & increases

1.   BBS – UK alerts – 16 years
2.   BBS – England alerts – 16 years
3.   BBS – Scotland alerts – 16 years
4.   BBS – Wales alerts – 16 years
5.   BBS – Northern Ireland alerts – 16 years
6.   BBS – UK alerts – 10 years
7.   BBS – England alerts – 10 years
8.   BBS – Scotland alerts – 10 years
9.   BBS – Wales alerts – 10 years
10. BBS – Northern Ireland alerts – 10 years
11. BBS – UK alert – 5 years
12. BBS – England alerts – 5 years
13. BBS – Scotland alerts – 5 years
14. BBS – Wales alerts – 5 years
15. BBS – Northern Ireland alerts – 5 years
16. BBS – UK population increases of >50% 16 years
17. BBS – England population increases of >50% – 16 years
18. BBS – Scotland population increases of >50% – 16 years   
19. BBS – Wales population increases of >50% – 16 years
20. BBS – Northern Ireland population increases of >50% – 16 years

 

1. Table of declines >25% for BBS UK 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 16 158 -85 -88 -82 >50  
Willow Tit 16 50 -82 -87 -76 >50  
Wood Warbler 16 52 -69 -78 -54 >50  
Whinchat 16 75 -60 -71 -48 >50  
Grey Partridge 16 225 -53 -60 -45 >50  
Starling 16 1745 -53 -56 -50 >50  
Pied Flycatcher 16 40 -52 -67 -35 >50  
Cuckoo 16 721 -50 -55 -46 >50  
Spotted Flycatcher 16 194 -49 -59 -38 >25  
Curlew 16 510 -45 -51 -39 >25  
Yellow Wagtail 16 157 -45 -53 -34 >25  
Little Owl 16 99 -44 -54 -32 >25  
Redshank 16 84 -42 -56 -25 >25  
Lapwing 16 666 -41 -47 -33 >25  
Swift 16 1026 -39 -46 -32 >25  
Kingfisher 16 54 -39 -54 -15 >25  
Dipper 16 58 -36 -54 -12 >25  
Corn Bunting 16 142 -34 -45 -23 >25  
Grey Wagtail 16 221 -31 -41 -12 >25  
Mistle Thrush 16 1176 -31 -37 -24 >25  
Kestrel 16 648 -30 -37 -23 >25  

2. Table of declines >25% for BBS England 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 16 156 -85 -88 -81 >50  
Willow Tit 16 45 -81 -87 -74 >50  
Cuckoo 16 562 -65 -67 -62 >50  
Starling 16 1429 -58 -61 -55 >50  
Spotted Flycatcher 16 135 -56 -64 -45 >50  
Grey Partridge 16 201 -49 -55 -41 >25  
Whinchat 16 32 -48 -66 -27 >25  
Tree Pipit 16 74 -45 -61 -22 >25  
Yellow Wagtail 16 153 -45 -52 -34 >25  
Little Owl 16 96 -42 -52 -29 >25  
Swift 16 887 -39 -45 -31 >25  
Mistle Thrush 16 922 -38 -42 -33 >25  
Kingfisher 16 48 -33 -49 -11 >25  
Curlew 16 326 -32 -38 -23 >25  
Redshank 16 60 -32 -49 -8 >25  
Corn Bunting 16 136 -30 -43 -19 >25  
Willow Warbler 16 913 -29 -34 -23 >25  
Marsh Tit 16 133 -26 -37 -12 >25  

3. Table of declines >25% for BBS Scotland 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Kestrel 16 43 -57 -72 -35 >50  
Swift 16 50 -57 -68 -37 >50  
Lapwing 16 87 -56 -64 -44 >50  
Curlew 16 120 -56 -63 -47 >50  
Starling 16 146 -40 -53 -27 >25  
Rook 16 109 -34 -48 -11 >25  
Grey Wagtail 16 33 -32 -53 0 >25  
Oystercatcher 16 127 -30 -39 -20 >25  
Meadow Pipit 16 200 -29 -37 -21 >25  

4. Table of declines >25% for BBS Wales 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Starling 16 80 -70 -80 -60 >50  
Curlew 16 35 -58 -70 -43 >50  
Goldcrest 16 80 -49 -63 -21 >25  
Yellowhammer 16 35 -48 -64 -33 >25  
Swift 16 66 -44 -61 -11 >25  
Cuckoo 16 56 -34 -48 -21 >25  
Linnet 16 92 -30 -48 -8 >25  

5. Table of declines >25% for BBS Northern Ireland 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Skylark 16 34 -50 -60 -41 >50  
Meadow Pipit 16 64 -29 -41 -7 >25  

6. Table of declines >25% for BBS UK 2001-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 132 -77 -81 -72 >50  
Willow Tit 10 45 -64 -73 -57 >50  
Grey Wagtail 10 260 -53 -58 -44 >50  
Little Owl 10 102 -49 -59 -38 >25  
Stonechat 10 203 -49 -56 -37 >25  
Starling 10 1866 -46 -50 -42 >25  
Kingfisher 10 61 -45 -63 -26 >25  
Whinchat 10 69 -44 -55 -29 >25  
Wood Warbler 10 49 -40 -57 -18 >25  
Dipper 10 64 -39 -57 -18 >25  
Mistle Thrush 10 1285 -36 -40 -32 >25  
Goldcrest 10 888 -34 -40 -25 >25  
Spotted Flycatcher 10 186 -34 -49 -17 >25  
Lapwing 10 733 -33 -37 -25 >25  
Curlew 10 545 -33 -41 -26 >25  
Greenfinch 10 2048 -33 -36 -31 >25  
Grey Partridge 10 222 -32 -42 -23 >25  
Cuckoo 10 686 -32 -38 -27 >25  
Redshank 10 93 -30 -44 -13 >25  
Marsh Tit 10 159 -29 -40 -18 >25  
Swift 10 1111 -28 -35 -19 >25  

7. Table of declines >25% for BBS England 2001-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 130 -78 -81 -72 >50  
Willow Tit 10 40 -63 -72 -51 >50  
Little Owl 10 99 -47 -58 -35 >25  
Starling 10 1520 -47 -50 -43 >25  
Spotted Flycatcher 10 126 -45 -54 -33 >25  
Stonechat 10 95 -44 -56 -30 >25  
Cuckoo 10 519 -43 -47 -38 >25  
Grey Wagtail 10 177 -42 -49 -32 >25  
Redshank 10 68 -40 -53 -22 >25  
Mistle Thrush 10 992 -38 -41 -35 >25  
Whinchat 10 32 -37 -53 -21 >25  
Kingfisher 10 55 -33 -46 -16 >25  
Greenfinch 10 1724 -33 -35 -30 >25  
Snipe 10 106 -32 -43 -16 >25  
Swift 10 957 -28 -35 -21 >25  
Tree Pipit 10 77 -28 -44 -11 >25  
Pied Wagtail 10 1072 -27 -32 -23 >25  
Lapwing 10 622 -26 -30 -19 >25  
Feral Pigeon/Rock Dove 10 615 -26 -33 -18 >25  
Marsh Tit 10 145 -26 -36 -12 >25  

8. Table of declines >25% for BBS Scotland 2001-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Grey Wagtail 10 37 -64 -74 -45 >50  
Stonechat 10 48 -56 -65 -36 >50  
Goldcrest 10 104 -50 -61 -32 >25  
Starling 10 158 -44 -54 -34 >25  
Mistle Thrush 10 87 -42 -54 -20 >25  
Kestrel 10 44 -40 -62 -12 >25  
Lapwing 10 87 -40 -51 -25 >25  
Curlew 10 115 -40 -50 -30 >25  
Wren 10 248 -37 -42 -27 >25  
Rook 10 114 -37 -51 -19 >25  
Grey Heron 10 52 -31 -47 -11 >25 Non-breeders included
Song Thrush 10 199 -26 -37 -12 >25  

9. Table of declines >25% for BBS Wales 2001-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Starling 10 81 -52 -61 -43 >50  
Curlew 10 33 -43 -57 -25 >25  
Goldcrest 10 86 -43 -52 -30 >25  
Swift 10 70 -41 -55 -13 >25  
Linnet 10 100 -40 -54 -29 >25  
Greenfinch 10 132 -39 -47 -26 >25  
Grey Heron 10 47 -35 -45 -21 >25 Non-breeders included
Treecreeper 10 42 -31 -49 -7 >25  
Yellowhammer 10 34 -27 -42 -11 >25  
Robin 10 216 -26 -31 -19 >25  

10. Table of declines >25% for BBS Northern Ireland 2001-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Skylark 10 35 -57 -68 -50 >50  
Greenfinch 10 63 -52 -63 -41 >50  
Meadow Pipit 10 73 -51 -58 -46 >50  
Goldcrest 10 52 -46 -53 -27 >25  
Starling 10 94 -41 -51 -31 >25  
Rook 10 88 -40 -51 -24 >25  
Mistle Thrush 10 70 -38 -52 -20 >25  
Wren 10 108 -34 -37 -23 >25  

11. Table of declines >25% for BBS UK 2006-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 112 -63 -68 -56 >50  
Stonechat 5 231 -62 -67 -53 >50  
Grey Wagtail 5 279 -51 -54 -40 >50  
Willow Tit 5 45 -46 -59 -35 >25  
Kingfisher 5 65 -43 -52 -33 >25  
Greenfinch 5 2245 -35 -37 -33 >25  
Whinchat 5 76 -34 -47 -18 >25  
Starling 5 1996 -33 -39 -27 >25  
Lapwing 5 784 -32 -36 -26 >25  
Little Owl 5 106 -32 -41 -21 >25  
Wood Warbler 5 53 -32 -49 -10 >25  
Dipper 5 74 -29 -45 -5 >25  
Goldcrest 5 960 -28 -34 -20 >25  
Redshank 5 101 -27 -41 -13 >25  
Mistle Thrush 5 1363 -26 -30 -22 >25  

12. Table of declines >25% for BBS England 2006-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 110 -63 -68 -57 >50  
Stonechat 5 117 -56 -64 -44 >50  
Willow Tit 5 42 -43 -55 -29 >25  
Kingfisher 5 59 -42 -50 -30 >25  
Grey Wagtail 5 196 -41 -46 -29 >25  
Greenfinch 5 1903 -35 -38 -33 >25  
Starling 5 1638 -33 -36 -29 >25  
Little Owl 5 103 -32 -42 -22 >25  
Lapwing 5 671 -30 -34 -24 >25  
Spotted Flycatcher 5 124 -30 -41 -17 >25  
Snipe 5 130 -26 -34 -13 >25  
Cuckoo 5 530 -26 -31 -22 >25  
Mistle Thrush 5 1044 -25 -28 -22 >25  

13. Table of declines >25% for BBS Scotland 2006-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Stonechat 5 56 -73 -78 -58 >50  
Grey Wagtail 5 40 -56 -69 -38 >50  
Wren 5 284 -46 -49 -39 >25  
Goldcrest 5 119 -43 -54 -28 >25  
Kestrel 5 44 -40 -60 -17 >25  
Swift 5 59 -38 -51 -11 >25  
Mistle Thrush 5 99 -37 -49 -20 >25  
Lapwing 5 91 -35 -41 -23 >25  
Starling 5 171 -35 -50 -16 >25  
Greenfinch 5 127 -29 -39 -18 >25  
Song Thrush 5 229 -25 -32 -16 >25  

14. Table of declines >25% for BBS Wales 2006-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Starling 5 77 -40 -51 -29 >25  
Greenfinch 5 134 -39 -45 -31 >25  
Stonechat 5 44 -36 -50 -24 >25  
Grey Heron 5 43 -27 -40 -10 >25 Non-breeders included
Robin 5 216 -25 -29 -19 >25  

15. Table of declines >25% for BBS Northern Ireland 2006-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 65 -52 -61 -43 >50  
Meadow Pipit 5 73 -51 -56 -43 >50  
Goldcrest 5 56 -51 -56 -38 >50  
Wren 5 111 -35 -37 -26 >25  
Skylark 5 33 -33 -42 -22 >25  
Mistle Thrush 5 70 -33 -43 -25 >25  
Reed Bunting 5 39 -28 -42 -12 >25  

16. Table of population increases for BBS UK 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Jackdaw 16 1665 51 40 65    
Lesser Redpoll 16 159 55 26 96    
Canada Goose 16 465 57 34 94    
Buzzard 16 921 80 62 96    
Gadwall 16 36 86 7 205    
Nuthatch 16 469 88 65 105    
Siskin 16 165 89 42 129    
Chiffchaff 16 1453 93 85 104    
Goldfinch 16 1553 109 97 122    
Tree Sparrow 16 170 113 71 168    
Crossbill 16 56 130 46 231    
Blackcap 16 1545 133 124 151    
Great Spotted Woodpecker 16 1047 139 125 155    
Greylag Goose 16 178 179 58 379    
Barn Owl 16 46 279 180 497    
Red Kite 16 87 676 369 1265    
Ring-necked Parakeet 16 59 1057 458 3284    

17. Table of population increases for BBS England 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Jackdaw 16 1333 53 44 62    
Tree Sparrow 16 136 75 39 119    
Gadwall 16 34 82 17 189    
Chiffchaff 16 1221 90 82 101    
Nuthatch 16 397 92 72 113    
Siskin 16 58 96 5 350    
Goldfinch 16 1282 100 88 116    
Blackcap 16 1321 108 99 119    
Great Spotted Woodpecker 16 912 117 104 130    
Buzzard 16 607 167 136 210    
Greylag Goose 16 147 248 137 515    
Barn Owl 16 43 285 181 469    
Ring-necked Parakeet 16 59 1058 451 3122    
Red Kite 16 62 11260 4751 10585    

18. Table of population increases for BBS Scotland 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Great Tit 16 152 51 26 81    
Bullfinch 16 41 52 5 97    
Lesser Redpoll 16 46 55 12 129    
Dunnock 16 141 60 30 92    
Siskin 16 73 81 28 129    
Tree Pipit 16 33 84 22 150    
Whitethroat 16 79 112 63 196    
House Martin 16 62 114 45 216    
Goldfinch 16 88 164 84 237    
Great Spotted Woodpecker 16 48 329 223 465    
Blackcap 16 57 357 215 534    
Chiffchaff 16 47 414 257 716    

19. Table of population increases for BBS Wales 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Great Tit 16 170 56 38 78    
Chiffchaff 16 137 75 48 109    
Goldfinch 16 126 79 45 130    
Stonechat 16 36 82 18 179    
House Sparrow 16 122 99 69 137    
Blackcap 16 120 163 118 211    
Great Spotted Woodpecker 16 76 198 136 266    

20. Table of population increases for BBS Northern Ireland 1995-2011

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Dunnock 16 70 62 1 104    
House Martin 16 42 69 2 171    
Woodpigeon 16 83 93 50 145    
Coal Tit 16 63 93 39 138    
Jackdaw 16 75 107 51 148    
Willow Warbler 16 79 114 55 152    
Hooded Crow 16 81 127 77 189    
Pheasant 16 41 144 41 231    
Great Tit 16 72 176 110 204