BBS population declines & increases

1.   BBS – UK alerts – 21 years
2.   BBS – England alerts – 21 years
3.   BBS – Scotland alerts – 21 years
4.   BBS – Wales alerts – 21 years
5.   BBS – Northern Ireland alerts – 21 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% 21 years
17. BBS – England population increases of >50% – 21 years
18. BBS – Scotland population increases of >50% – 21 years   
19. BBS – Wales population increases of >50% – 21 years
20. BBS – Northern Ireland population increases of >50% – 21 years

1. Table of declines >25% for BBS UK 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 21 131 -94 -96 -92 >50  
Willow Tit 21 47 -81 -87 -74 >50  
Wood Warbler 21 53 -62 -78 -41 >50  
Grey Partridge 21 225 -60 -66 -52 >50  
Little Owl 21 95 -58 -67 -48 >50  
Greenfinch 21 1861 -54 -56 -51 >50  
Swift 21 1064 -53 -58 -49 >50  
Whinchat 21 78 -53 -65 -38 >50  
Starling 21 1820 -51 -55 -48 >50  
Curlew 21 537 -48 -54 -43 >25  
Marsh Tit 21 151 -45 -52 -38 >25  
Cuckoo 21 708 -43 -48 -38 >25  
Yellow Wagtail 21 165 -43 -51 -32 >25  
Lapwing 21 701 -42 -48 -34 >25  
Redshank 21 89 -41 -60 -12 >25  
Spotted Flycatcher 21 192 -39 -53 -24 >25  
Kestrel 21 686 -35 -40 -28 >25  
Corn Bunting 21 145 -34 -48 -19 >25  
Tawny Owl 21 96 -27 -40 -10 >25 Nocturnal species
Wheatear 21 366 -26 -36 -9 >25  

2. Table of declines >25% for BBS England 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 21 129 -94 -96 -91 >50  
Willow Tit 21 41 -84 -90 -77 >50  
Cuckoo 21 545 -70 -73 -67 >50  
Spotted Flycatcher 21 133 -65 -72 -58 >50  
Starling 21 1480 -61 -63 -58 >50  
Grey Partridge 21 202 -58 -65 -50 >50  
Little Owl 21 92 -58 -68 -47 >50  
Nightingale 21 33 -58 -73 -33 >50  
Swift 21 917 -53 -58 -47 >50  
Greenfinch 21 1570 -51 -54 -48 >50  
Common Sandpiper 21 32 -47 -64 -27 >25  
Tree Pipit 21 76 -47 -66 -25 >25  
Whinchat 21 34 -44 -65 -24 >25  
Marsh Tit 21 137 -43 -52 -33 >25  
Yellow Wagtail 21 161 -42 -49 -30 >25  
Willow Warbler 21 958 -40 -46 -33 >25  
Redshank 21 63 -39 -54 -18 >25  
Mistle Thrush 21 954 -36 -40 -31 >25  
Corn Bunting 21 138 -33 -46 -17 >25  
Feral Pigeon/Rock Dove 21 591 -31 -39 -22 >25  
Garden Warbler 21 379 -31 -39 -21 >25  
Curlew 21 352 -30 -38 -22 >25  
House Martin 21 760 -29 -36 -22 >25  
Yellowhammer 21 1077 -28 -32 -24 >25  
Lapwing 21 590 -26 -34 -18 >25  
Tawny Owl 21 83 -26 -41 -3 >25 Nocturnal species
Sparrowhawk 21 301 -25 -33 -17 >25  

3. Table of declines >25% for BBS Scotland 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Kestrel 21 41 -65 -77 -47 >50  
Curlew 21 130 -61 -67 -53 >50  
Greenfinch 21 110 -61 -72 -50 >50  
Swift 21 56 -59 -69 -44 >50  
Lapwing 21 89 -57 -67 -46 >50  
Oystercatcher 21 141 -38 -48 -29 >25  
Rook 21 122 -35 -47 -10 >25  
Wheatear 21 87 -31 -46 -11 >25  
Hooded Crow 21 53 -31 -52 -7 >25  
Starling 21 164 -25 -40 -3 >25  

4. Table of declines >25% for BBS Wales 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Starling 21 82 -72 -80 -62 >50  
Curlew 21 35 -63 -76 -50 >50  
Greenfinch 21 117 -62 -71 -50 >50  
Swift 21 68 -61 -71 -45 >50  
Yellowhammer 21 33 -58 -73 -42 >50  
Rook 21 83 -52 -66 -37 >50  
Wheatear 21 59 -32 -48 -10 >25  
Coal Tit 21 81 -27 -45 -1 >25  

5. Table of declines >25% for BBS Northern Ireland 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 21 49 -65 -79 -33 >50  
Skylark 21 32 -47 -59 -36 >25  

6. Table of declines >25% for BBS UK 2006-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 80 -84 -89 -78 >50  
Greenfinch 10 2168 -64 -66 -63 >50  
Willow Tit 10 40 -47 -63 -30 >25  
Little Owl 10 95 -46 -56 -35 >25  
Swift 10 1183 -39 -45 -34 >25  
Marsh Tit 10 166 -37 -45 -28 >25  
Grey Partridge 10 229 -36 -43 -27 >25  
Stonechat 10 211 -35 -42 -27 >25  
Lapwing 10 797 -34 -40 -26 >25  
Kestrel 10 797 -30 -35 -25 >25  
Starling 10 2024 -30 -35 -26 >25  
Moorhen 10 774 -26 -30 -21 >25  
Grey Wagtail 10 271 -25 -34 -17 >25  

7. Table of declines >25% for BBS England 2006-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 79 -84 -89 -78 >50  
Greenfinch 10 1836 -62 -64 -61 >50  
Willow Tit 10 36 -54 -67 -37 >50  
Little Owl 10 92 -46 -57 -34 >25  
Spotted Flycatcher 10 125 -43 -52 -32 >25  
Cuckoo 10 512 -37 -42 -31 >25  
Swift 10 1021 -37 -43 -32 >25  
Starling 10 1639 -37 -40 -33 >25  
Grey Partridge 10 207 -36 -45 -27 >25  
Redshank 10 76 -32 -47 -17 >25  
House Martin 10 859 -31 -36 -27 >25  
Lapwing 10 684 -30 -35 -24 >25  
Marsh Tit 10 153 -29 -39 -19 >25  
Grey Heron 10 674 -27 -32 -22 >25 Non-breeders included
Sparrowhawk 10 346 -27 -33 -22 >25  
Feral Pigeon/Rock Dove 10 671 -27 -33 -17 >25  
Moorhen 10 721 -25 -30 -20 >25  

8. Table of declines >25% for BBS Scotland 2006-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 10 129 -65 -72 -58 >50  
Kestrel 10 40 -53 -65 -37 >50  
Stonechat 10 49 -49 -59 -38 >25  
Swift 10 65 -42 -57 -23 >25  
Grey Wagtail 10 37 -41 -55 -19 >25  
Lapwing 10 92 -39 -54 -21 >25  
Goldcrest 10 121 -35 -50 -21 >25  

9. Table of declines >25% for BBS Wales 2006-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 10 131 -72 -77 -66 >50  
Swift 10 71 -44 -57 -25 >25  
Starling 10 81 -43 -54 -30 >25  
Rook 10 91 -40 -53 -26 >25  
Yellowhammer 10 30 -37 -54 -13 >25  
Curlew 10 31 -35 -51 -16 >25  

10. Table of declines >25% for BBS Northern Ireland 2006-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 10 54 -80 -84 -74 >50  
Linnet 10 43 -44 -59 -22 >25  
Lesser Redpoll 10 37 -43 -58 -22 >25  
Goldcrest 10 56 -30 -46 -6 >25  
Swallow 10 100 -29 -38 -20 >25  
Skylark 10 30 -28 -40 -14 >25  
Mistle Thrush 10 68 -25 -36 -11 >25  

11. Table of declines >25% for BBS UK 2011-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 44 -59 -72 -45 >50  
Crossbill 5 74 -58 -69 -43 >50  
Greenfinch 5 2017 -44 -46 -43 >25  
Grasshopper Warbler 5 104 -29 -40 -15 >25  
Wheatear 5 470 -28 -36 -19 >25  
Nightingale 5 41 -26 -42 -8 >25  
Marsh Tit 5 161 -26 -35 -17 >25  
Swift 5 1119 -25 -31 -20 >25  

12. Table of declines >25% for BBS England 2011-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 42 -58 -70 -42 >50  
Greenfinch 5 1717 -42 -44 -40 >25  
Wheatear 5 270 -32 -39 -22 >25  
Nightingale 5 41 -26 -38 -6 >25  
Swift 5 963 -25 -31 -19 >25  

13. Table of declines >25% for BBS Scotland 2011-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 113 -50 -60 -38 >25  
Wheatear 5 105 -28 -40 -15 >25  

14. Table of declines >25% for BBS Wales 2011-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 124 -55 -62 -48 >50  
Rook 5 94 -39 -50 -24 >25  
Swift 5 70 -34 -50 -13 >25  
Wheatear 5 76 -25 -41 -11 >25  

15. Table of declines >25% for BBS Northern Ireland 2011-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Greenfinch 5 43 -57 -65 -47 >50  
Lesser Redpoll 5 33 -41 -54 -23 >25  
Linnet 5 38 -37 -54 -19 >25  

16. Table of population increases for BBS UK 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Jackdaw 21 1893 55 42 68    
Canada Goose 21 535 82 53 118    
Nuthatch 21 561 87 65 116    
Stonechat 21 164 92 54 152    
Buzzard 21 1136 93 78 111    
Tree Sparrow 21 199 112 67 168    
Chiffchaff 21 1695 125 114 138    
Great Spotted Woodpecker 21 1190 126 111 144    
Goldfinch 21 1828 136 121 147    
Blackcap 21 1779 143 129 156    
Gadwall 21 44 171 60 389    
Greylag Goose 21 249 190 46 497    
Barn Owl 21 50 238 140 398    
Mandarin 21 34 414 178 904    
Red Kite 21 152 1457 905 2970    
Ring-necked Parakeet 21 81 1480 658 6978    
Little Egret 21 49 2365 749 2.184E10    

17. Table of population increases for BBS England 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Goldcrest 21 611 53 32 81    
Tree Sparrow 21 155 64 27 109    
Canada Goose 21 493 66 43 107    
Jackdaw 21 1521 68 57 80    
Raven 21 163 68 16 287    
Nuthatch 21 477 89 72 110    
Stonechat 21 72 94 41 180    
Great Spotted Woodpecker 21 1034 99 85 111    
Blackcap 21 1509 116 102 129    
Chiffchaff 21 1422 128 115 142    
Goldfinch 21 1505 132 117 144    
Gadwall 21 42 151 45 365    
Buzzard 21 785 211 175 266    
Barn Owl 21 48 256 153 440    
Greylag Goose 21 206 323 174 684    
Ring-necked Parakeet 21 81 1480 677 5967    
Little Egret 21 45 2197 565 25700    
Red Kite 21 113 18669 9906 96490    

18. Table of population increases for BBS Scotland 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Great Tit 21 176 52 33 81    
Lesser Redpoll 21 53 58 13 143    
Reed Bunting 21 67 58 17 105    
Stonechat 21 38 63 10 147    
Wren 21 250 79 61 101    
Tree Pipit 21 37 85 45 145    
Whitethroat 21 94 122 25 229    
House Martin 21 78 128 65 219    
Goldfinch 21 114 197 138 282    
Great Spotted Woodpecker 21 61 419 289 615    
Blackcap 21 76 440 301 699    
Chiffchaff 21 68 775 490 1217    

19. Table of population increases for BBS Wales 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Pheasant 21 104 52 18 98    
Chiffchaff 21 157 74 49 99    
House Sparrow 21 138 75 50 107    
Goldfinch 21 144 83 54 116    
Blackcap 21 141 139 100 187    
Great Spotted Woodpecker 21 91 180 126 259    
Stonechat 21 42 191 117 343    

20. Table of population increases for BBS Northern Ireland 1995-2016

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Song Thrush 21 81 60 28 105    
Willow Warbler 21 83 60 32 95    
Pied Wagtail 21 48 65 26 149    
Dunnock 21 73 70 18 131    
Wren 21 95 76 38 118    
Jackdaw 21 79 78 43 143    
Woodpigeon 21 88 90 51 141    
Collared Dove 21 35 95 27 333    
Pheasant 21 43 104 35 264    
House Martin 21 47 107 25 238    
Great Tit 21 77 140 96 193    
Hooded Crow 21 85 178 113 250    
Goldfinch 21 53 446 262 985    
Buzzard 21 35 1195 552 2676    
Blackcap 21 44 1460 1067 2525