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BBWC Home > Contents > Appendix > Tables of alerts and population increases from CBC/BBS
   
7.1 Tables of alerts and population increases from CBC/BBS
   
1a. CBC/BBS UK alerts – 41 years
1b. CBC/BBS England alerts – 41 years
2a. CBC/BBS UK alerts – 25 years
2b. CBC/BBS England alerts – 25 years
3a. CBC/BBS UK alerts – 10 years
3b. CBC/BBS England alerts – 10 years
4a. CBC/BBS UK alerts – 5 years
4b. CBC/BBS England alerts – 5 years
5a. CBC/BBS UK population increases of >50% – 41 years
5b. CBC/BBS England population increases of >50% – 41 years
 
1a. Table of population alerts for CBC/BBS UK 1967-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Grey Partridge 41 126 -90 -93 -86 >50  
Turtle Dove 41 106 -89 -93 -83 >50  
Willow Tit 41 43 -88 -94 -76 >50  
Spotted Flycatcher 41 124 -87 -92 -81 >50  
Corn Bunting 41 68 -86 -94 -75 >50  
Yellow Wagtail 41 74 -77 -90 -55 >50  
Marsh Tit 41 92 -71 -79 -60 >50  
Whitethroat 41 508 -62 -72 -48 >50  
Cuckoo 41 330 -58 -69 -43 >50  
Yellowhammer 41 488 -56 -65 -46 >50  
Little Owl 41 57 -50 -69 -22 >25  
Song Thrush 41 771 -48 -56 -38 >25  
Mistle Thrush 41 494 -47 -55 -37 >25  
Bullfinch 41 292 -47 -58 -36 >25  
Dunnock 41 796 -34 -43 -21 >25  

1b. Table of population alerts for CBC/BBS England 1967-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Tree Sparrow 41 87 -97 -99 -93 >50  
Spotted Flycatcher 41 95 -90 -94 -84 >50  
Grey Partridge 41 114 -89 -93 -85 >50  
Turtle Dove 41 106 -89 -93 -83 >50  
Lesser Redpoll 41 44 -89 -96 -75 >50  
Willow Tit 41 40 -87 -95 -77 >50  
Tree Pipit 41 46 -86 -93 -73 >50  
Starling 41 557 -85 -89 -80 >50  
Corn Bunting 41 65 -84 -93 -73 >50  
Linnet 41 401 -76 -82 -70 >50  
Yellow Wagtail 41 73 -75 -88 -58 >50  
Cuckoo 41 275 -70 -78 -60 >50  
Marsh Tit 41 85 -70 -79 -61 >50  
Whitethroat 41 441 -63 -75 -51 >50  
Skylark 41 523 -61 -68 -55 >50  
Willow Warbler 41 433 -60 -70 -45 >50  
Yellowhammer 41 428 -59 -68 -46 >50  
Mistle Thrush 41 407 -54 -62 -43 >50  
Bullfinch 41 238 -51 -62 -39 >50  
Meadow Pipit 41 161 -49 -74 -25 >25  
Song Thrush 41 617 -49 -59 -41 >25  
Little Owl 41 55 -43 -66 -9 >25  
Dunnock 41 662 -38 -47 -28 >25  
Sedge Warbler 41 89 -36 -66 -8 >25  

2a. Table of population alerts for CBC/BBS UK 1983-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Willow Tit 25 45 -85 -91 -75 >50  
Turtle Dove 25 127 -84 -89 -79 >50  
Spotted Flycatcher 25 148 -80 -87 -73 >50  
Corn Bunting 25 91 -78 -90 -62 >50  
Grey Partridge 25 158 -77 -83 -69 >50  
Yellow Wagtail 25 101 -74 -85 -58 >50  
Cuckoo 25 472 -58 -64 -51 >50  
Little Owl 25 76 -54 -67 -39 >50  
Yellowhammer 25 705 -53 -59 -48 >50  
Lapwing 25 386 -50 -62 -34 >50  
Marsh Tit 25 114 -41 -55 -28 >25  
Mistle Thrush 25 713 -39 -44 -32 >25  

2b. Table of population alerts for CBC/BBS England 1983-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Lesser Redpoll 25 41 -94 -97 -88 >50  
Tree Sparrow 25 88 -87 -95 -77 >50  
Tree Pipit 25 53 -86 -92 -79 >50  
Willow Tit 25 40 -85 -93 -76 >50  
Turtle Dove 25 126 -84 -89 -80 >50  
Spotted Flycatcher 25 110 -83 -89 -77 >50  
Starling 25 837 -79 -82 -74 >50  
Corn Bunting 25 87 -77 -89 -62 >50  
Grey Partridge 25 142 -76 -83 -68 >50  
Yellow Wagtail 25 99 -73 -83 -60 >50  
Cuckoo 25 389 -70 -75 -64 >50  
Willow Warbler 25 604 -61 -68 -54 >50  
Yellowhammer 25 618 -57 -63 -51 >50  
House Sparrow 25 717 -52 -63 -39 >50  
Little Owl 25 73 -48 -64 -31 >25  
Mistle Thrush 25 582 -48 -55 -42 >25  
Lapwing 25 325 -44 -59 -22 >25  
Marsh Tit 25 105 -41 -57 -23 >25  
Linnet 25 576 -41 -53 -28 >25  
Skylark 25 782 -39 -45 -32 >25  
Meadow Pipit 25 240 -39 -58 -21 >25  
Tawny Owl 25 77 -27 -44 -7 >25  
Goldcrest 25 335 -26 -41 -2 >25  

3a. Table of population alerts for CBC/BBS UK 1998-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Willow Tit 10 53 -65 -74 -50 >50  
Turtle Dove 10 176 -64 -70 -58 >50  
Yellow Wagtail 10 155 -43 -52 -33 >25  
Grey Partridge 10 234 -38 -48 -31 >25  
Cuckoo 10 729 -34 -39 -29 >25  
Spotted Flycatcher 10 210 -32 -47 -11 >25  
Little Owl 10 111 -27 -37 -16 >25  

3b. Table of population alerts for CBC/BBS England 1998-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 10 174 -64 -70 -58 >50  
Willow Tit 10 47 -63 -71 -50 >50  
Cuckoo 10 585 -50 -53 -46 >25  
Yellow Wagtail 10 152 -42 -51 -32 >25  
Spotted Flycatcher 10 152 -41 -49 -29 >25  
Starling 10 1497 -39 -42 -35 >25  
Tree Pipit 10 77 -30 -47 -10 >25  
Willow Warbler 10 950 -30 -34 -25 >25  
Grey Partridge 10 213 -28 -40 -21 >25  
Little Owl 10 109 -27 -38 -17 >25  
Mistle Thrush 10 1004 -26 -30 -21 >25  

4a. Table of population alerts for CBC/BBS UK 2003-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 146 -47 -55 -39 >25  
Willow Tit 5 49 -36 -51 -15 >25  
Yellow Wagtail 5 150 -32 -42 -19 >25  
Grey Partridge 5 241 -25 -34 -13 >25  

4b. Table of population alerts for CBC/BBS England 2003-2008

Species Period
(yrs)
Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
Turtle Dove 5 144 -47 -54 -37 >25  
Willow Tit 5 43 -36 -50 -18 >25  
Yellow Wagtail 5 148 -32 -41 -19 >25  
Cuckoo 5 556 -31 -35 -26 >25  
Spotted Flycatcher 5 141 -30 -39 -17 >25  
Linnet 5 1011 -26 -31 -20 >25  

 
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This report should be cited as: Baillie, S.R., Marchant, J.H., Leech, D.I., Renwick, A.R., Joys, A.C., Noble, D.G., Barimore, C., Conway, G.J., Downie, I.S., Risely, K. & Robinson, R.A. (2010). Breeding Birds in the Wider Countryside: their conservation status 2010. BTO Research Report No. 565. BTO, Thetford. (http://www.bto.org/birdtrends)

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