BBS population declines & increases

1.   BBS – UK alerts – 20 years
2.   BBS – England alerts – 20 years
3.   BBS – Scotland alerts – 20 years
4.   BBS – Wales alerts – 20 years
5.   BBS – Northern Ireland alerts – 20 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% 20 years
17. BBS – England population increases of >50% – 20 years
18. BBS – Scotland population increases of >50% – 20 years   
19. BBS – Wales population increases of >50% – 20 years
20. BBS – Northern Ireland population increases of >50% – 20 years

1. Table of declines >25% for BBS UK 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 20 136 -94 -96 -93 >50  
Willow Tit 20 48 -80 -85 -73 >50  
Grey Partridge 20 227 -60 -66 -54 >50  
Little Owl 20 96 -57 -66 -46 >50  
Wood Warbler 20 53 -57 -75 -30 >50  
Swift 20 1061 -51 -56 -45 >50  
Whinchat 20 78 -51 -63 -37 >50  
Starling 20 1810 -51 -54 -48 >50  
Curlew 20 537 -48 -53 -44 >25  
Greenfinch 20 1856 -46 -48 -42 >25  
Lapwing 20 700 -43 -49 -36 >25  
Cuckoo 20 711 -43 -48 -36 >25  
Yellow Wagtail 20 162 -42 -50 -31 >25  
Pied Flycatcher 20 40 -41 -72 -7 >25  
Marsh Tit 20 152 -41 -51 -30 >25  
Kestrel 20 686 -38 -44 -31 >25  
Redshank 20 89 -38 -59 -6 >25  
Spotted Flycatcher 20 192 -38 -51 -23 >25  
Corn Bunting 20 144 -34 -48 -20 >25  
Tawny Owl 20 95 -28 -42 -12 >25 Nocturnal species

2. Table of declines >25% for BBS England 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 20 134 -94 -96 -92 >50  
Willow Tit 20 42 -82 -87 -73 >50  
Cuckoo 20 551 -69 -72 -66 >50  
Spotted Flycatcher 20 134 -61 -68 -54 >50  
Starling 20 1474 -60 -63 -57 >50  
Grey Partridge 20 203 -57 -63 -49 >50  
Little Owl 20 93 -57 -65 -47 >50  
Swift 20 914 -50 -56 -43 >25  
Nightingale 20 33 -48 -64 -15 >25  
Tree Pipit 20 76 -46 -64 -24 >25  
Common Sandpiper 20 31 -43 -61 -19 >25  
Willow Warbler 20 958 -43 -49 -37 >25  
Greenfinch 20 1565 -43 -46 -40 >25  
Yellow Wagtail 20 158 -41 -50 -30 >25  
Marsh Tit 20 137 -41 -51 -31 >25  
Dipper 20 31 -39 -59 0 >25  
Mistle Thrush 20 949 -38 -42 -33 >25  
Whinchat 20 34 -37 -60 -19 >25  
Redshank 20 64 -35 -51 -19 >25  
Corn Bunting 20 137 -33 -45 -17 >25  
Curlew 20 351 -31 -39 -21 >25  
Grasshopper Warbler 20 40 -31 -53 -11 >25  
Garden Warbler 20 378 -31 -38 -23 >25  
Feral Pigeon/Rock Dove 20 588 -29 -38 -19 >25  
Tawny Owl 20 82 -29 -41 -10 >25 Nocturnal species
House Martin 20 756 -28 -34 -20 >25  
Yellowhammer 20 1068 -26 -30 -22 >25  
Lapwing 20 589 -25 -33 -18 >25  

3. Table of declines >25% for BBS Scotland 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Kestrel 20 42 -69 -78 -52 >50  
Curlew 20 129 -59 -66 -52 >50  
Lapwing 20 89 -58 -68 -48 >50  
Swift 20 55 -57 -68 -38 >50  
Greenfinch 20 111 -55 -68 -40 >50  
Oystercatcher 20 140 -37 -47 -30 >25  
Rook 20 121 -33 -50 -15 >25  
Golden Plover 20 38 -31 -47 -11 >25  
Starling 20 161 -26 -42 -10 >25  

4. Table of declines >25% for BBS Wales 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Starling 20 82 -70 -79 -59 >50  
Curlew 20 35 -68 -76 -55 >50  
Swift 20 68 -59 -70 -41 >50  
Yellowhammer 20 34 -57 -70 -41 >50  
Greenfinch 20 117 -52 -64 -40 >50  
Rook 20 82 -42 -59 -18 >25  

5. Table of declines >25% for BBS Northern Ireland 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 20 49 -52 -72 -19 >50  
Skylark 20 32 -48 -58 -39 >25  

6. Table of declines >25% for BBS UK 2005-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 93 -87 -91 -85 >50  
Greenfinch 10 2181 -59 -61 -57 >50  
Willow Tit 10 43 -50 -62 -32 >50  
Stonechat 10 207 -47 -53 -37 >25  
Little Owl 10 96 -45 -55 -35 >25  
Swift 10 1192 -38 -42 -33 >25  
Grey Partridge 10 234 -37 -45 -28 >25  
Marsh Tit 10 169 -36 -45 -26 >25  
Kestrel 10 802 -35 -39 -29 >25  
Lapwing 10 803 -35 -41 -27 >25  
Grey Wagtail 10 269 -33 -40 -25 >25  
Starling 10 2015 -32 -36 -27 >25  
Grey Heron 10 810 -28 -35 -21 >25 Non-breeders included
Moorhen 10 768 -26 -30 -20 >25  

7. Table of declines >25% for BBS England 2005-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 92 -87 -91 -84 >50  
Greenfinch 10 1843 -58 -59 -55 >50  
Willow Tit 10 38 -51 -64 -34 >50  
Little Owl 10 94 -47 -56 -38 >25  
Stonechat 10 97 -41 -53 -25 >25  
Spotted Flycatcher 10 127 -41 -49 -29 >25  
Cuckoo 10 525 -40 -44 -34 >25  
Starling 10 1635 -38 -42 -34 >25  
Grey Partridge 10 212 -36 -44 -26 >25  
Swift 10 1028 -36 -41 -31 >25  
Redshank 10 76 -33 -48 -17 >25  
House Martin 10 856 -33 -37 -27 >25  
Lapwing 10 688 -31 -36 -25 >25  
Marsh Tit 10 154 -31 -40 -20 >25  
Mistle Thrush 10 1048 -29 -33 -26 >25  
Grey Heron 10 671 -28 -34 -22 >25 Non-breeders included
Feral Pigeon/Rock Dove 10 668 -28 -36 -19 >25  
Kestrel 10 717 -27 -30 -21 >25  
Moorhen 10 714 -25 -29 -20 >25  

8. Table of declines >25% for BBS Scotland 2005-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Kestrel 10 42 -59 -69 -40 >50  
Greenfinch 10 130 -59 -67 -50 >50  
Stonechat 10 49 -58 -69 -46 >50  
Grey Wagtail 10 37 -47 -60 -31 >25  
Goldcrest 10 119 -43 -52 -25 >25  
Lapwing 10 92 -40 -53 -24 >25  
Swift 10 65 -37 -55 -14 >25  
Grey Heron 10 64 -33 -48 -12 >25 Non-breeders included
Rook 10 138 -28 -46 -6 >25  
Linnet 10 108 -25 -38 -10 >25  

9. Table of declines >25% for BBS Wales 2005-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 10 133 -66 -71 -60 >50  
Swift 10 71 -45 -59 -28 >25  
Starling 10 82 -41 -52 -28 >25  
Curlew 10 32 -40 -52 -25 >25  
Yellowhammer 10 31 -36 -52 -15 >25  
Rook 10 90 -30 -43 -10 >25  

10. Table of declines >25% for BBS Northern Ireland 2005-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 10 57 -75 -80 -68 >50  
Linnet 10 43 -37 -56 -18 >25  
Skylark 10 31 -35 -47 -24 >25  
Lesser Redpoll 10 38 -32 . . >25  
Goldcrest 10 56 -31 -48 -10 >25  
Swallow 10 100 -29 -38 -20 >25  
Mistle Thrush 10 68 -27 -39 -13 >25  

11. Table of declines >25% for BBS UK 2010-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 56 -70 -79 -64 >50  
Greenfinch 5 2059 -40 -42 -39 >25  
Crossbill 5 80 -37 -61 -31 >25  
Grasshopper Warbler 5 110 -35 -50 -29 >25  
Barn Owl 5 65 -30 -44 -20 >25  

12. Table of declines >25% for BBS England 2010-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 54 -69 -79 -62 >50  
Greenfinch 5 1752 -38 -41 -36 >25  
Wheatear 5 294 -27 -37 -18 >25  

13. Table of declines >25% for BBS Scotland 2010-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 117 -47 -57 -39 >25  
Kestrel 5 36 -32 -50 -4 >25  

14. Table of declines >25% for BBS Wales 2010-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 124 -50 -59 -42 >50  
Curlew 5 31 -30 -44 -8 >25  
Rook 5 94 -30 -42 -13 >25  
Swift 5 68 -26 -46 -2 >25  

15. Table of declines >25% for BBS Northern Ireland 2010-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 46 -50 -60 -38 >25  
Lesser Redpoll 5 36 -42 . . >25  
Linnet 5 40 -40 -61 -25 >25  
Pheasant 5 55 -29 -41 -12 >25  

16. Table of population increases for BBS UK 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Stonechat 20 159 53 15 97    
Jackdaw 20 1855 54 44 66    
Siskin 20 197 61 25 93    
Canada Goose 20 524 75 46 123    
Buzzard 20 1096 84 70 100    
Nuthatch 20 545 90 71 109    
Chiffchaff 20 1646 109 98 121    
Tree Sparrow 20 195 119 71 167    
Goldfinch 20 1779 122 109 136    
Great Spotted Woodpecker 20 1166 130 116 146    
Gadwall 20 42 131 42 286    
Blackcap 20 1736 145 132 159    
Barn Owl 20 50 217 128 350    
Greylag Goose 20 237 232 28 586    
Mandarin 20 33 405 . .    
Red Kite 20 137 1231 780 2106    
Ring-necked Parakeet 20 77 1455 579 4457    
Little Egret 20 44 2894 . .    

17. Table of population increases for BBS England 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Stonechat 20 71 55 5 139    
Canada Goose 20 484 60 37 108    
Jackdaw 20 1490 65 54 76    
Tree Sparrow 20 152 69 39 119    
Nuthatch 20 464 91 72 112    
Great Spotted Woodpecker 20 1016 105 92 118    
Chiffchaff 20 1381 111 101 123    
Blackcap 20 1476 117 107 131    
Goldfinch 20 1465 118 106 130    
Gadwall 20 40 121 29 304    
Raven 20 155 130 7 280    
Buzzard 20 751 194 161 239    
Barn Owl 20 48 238 159 400    
Greylag Goose 20 197 284 176 526    
Ring-necked Parakeet 20 77 1455 526 4650    
Little Egret 20 40 2779 . .    
Red Kite 20 101 19918 9007 19277    

18. Table of population increases for BBS Scotland 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Dunnock 20 155 57 35 85    
Siskin 20 81 61 19 94    
Long-tailed Tit 20 33 63 3 146    
Great Tit 20 171 64 41 89    
Wren 20 243 67 47 82    
Tree Pipit 20 36 100 40 158    
Whitethroat 20 92 117 31 226    
House Martin 20 76 121 60 203    
Goldfinch 20 110 180 111 264    
Great Spotted Woodpecker 20 59 413 284 592    
Blackcap 20 73 460 298 736    
Chiffchaff 20 64 648 426 1147    

19. Table of population increases for BBS Wales 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Chiffchaff 20 153 67 42 94    
Goldfinch 20 141 76 47 109    
House Sparrow 20 135 79 50 115    
Stock Dove 20 33 88 23 197    
Stonechat 20 39 139 71 272    
Blackcap 20 137 151 109 197    
Great Spotted Woodpecker 20 89 180 134 262    

20. Table of population increases for BBS Northern Ireland 1995-2015

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Song Thrush 20 79 52 18 96    
Pied Wagtail 20 47 66 . .    
Wren 20 94 69 28 102    
Willow Warbler 20 82 72 32 90    
Dunnock 20 72 86 20 137    
Woodpigeon 20 87 87 44 124    
Pheasant 20 43 89 10 157    
Collared Dove 20 34 97 16 143    
Jackdaw 20 78 98 40 140    
House Martin 20 45 108 22 207    
Great Tit 20 76 172 107 214    
Hooded Crow 20 84 179 111 252    
Goldfinch 20 52 722 . .    
Buzzard 20 34 1015175 . .    
Blackcap 20 42 2382660 . .