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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 – 39 years
1b. CBC/BBS England alerts – 39 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% – 39 years
5b. CBC/BBS England population increases of >50% – 39 years
 
1a. Table of population alerts for CBC/BBS UK 1967-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Grey Partridge 39 119 -88 -91 -83 >50  
Corn Bunting 39 63 -87 -94 -77 >50  
Spotted Flycatcher 39 121 -86 -90 -80 >50  
Turtle Dove 39 106 -85 -90 -76 >50  
Willow Tit 39 43 -85 -93 -72 >50  
Yellow Wagtail 39 71 -74 -88 -46 >50  
Marsh Tit 39 89 -68 -77 -56 >50  
Whitethroat 39 447 -62 -73 -50 >50  
Yellowhammer 39 440 -55 -65 -47 >50  
Song Thrush 39 678 -51 -58 -43 >50  
Bullfinch 39 271 -50 -61 -37 >25  
Little Owl 39 54 -46 -68 -12 >25  
Mistle Thrush 39 447 -43 -51 -31 >25  
Lapwing 39 231 -34 -64 -5 >25  
Dunnock 39 703 -33 -42 -22 >25  

1b. Table of population alerts for CBC/BBS England 1967-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Tree Sparrow 39 83 -97 -99 -94 >50  
Lesser Redpoll 39 43 -90 -96 -78 >50  
Grey Partridge 39 107 -88 -91 -82 >50  
Spotted Flycatcher 39 93 -87 -92 -82 >50  
Turtle Dove 39 105 -85 -91 -76 >50  
Corn Bunting 39 60 -84 -93 -74 >50  
Tree Pipit 39 44 -83 -92 -71 >50  
Willow Tit 39 40 -83 -92 -70 >50  
Starling 39 492 -83 -88 -77 >50  
Linnet 39 367 -75 -81 -66 >50  
Yellow Wagtail 39 69 -72 -85 -38 >50  
Marsh Tit 39 82 -68 -78 -55 >50  
Whitethroat 39 388 -63 -73 -50 >50  
Cuckoo 39 260 -61 -71 -48 >50  
Skylark 39 455 -59 -66 -51 >50  
Willow Warbler 39 399 -58 -70 -46 >50  
Yellowhammer 39 385 -57 -66 -46 >50  
Bullfinch 39 221 -52 -62 -39 >50  
Song Thrush 39 540 -51 -60 -42 >50  
Mistle Thrush 39 367 -49 -57 -39 >25  
Meadow Pipit 39 136 -46 -74 -24 >25  
Sedge Warbler 39 81 -39 -69 -13 >25  
Dunnock 39 582 -37 -46 -26 >25  

2a. Table of population alerts for CBC/BBS UK 1981-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Corn Bunting 25 80 -84 -92 -74 >50  
Turtle Dove 25 123 -82 -88 -75 >50  
Willow Tit 25 44 -82 -90 -69 >50  
Spotted Flycatcher 25 142 -81 -86 -75 >50  
Grey Partridge 25 142 -78 -85 -71 >50  
Yellow Wagtail 25 91 -70 -82 -55 >50  
Lapwing 25 324 -53 -65 -37 >50  
Yellowhammer 25 605 -53 -59 -48 >50  
Little Owl 25 69 -46 -63 -29 >25  
Mistle Thrush 25 615 -38 -45 -31 >25  
Marsh Tit 25 107 -38 -51 -16 >25  
Bullfinch 25 340 -28 -39 -14 >25  

2b. Table of population alerts for CBC/BBS England 1981-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Lesser Redpoll 25 40 -95 -98 -91 >50  
Tree Sparrow 25 80 -93 -97 -88 >50  
Corn Bunting 25 76 -83 -92 -71 >50  
Turtle Dove 25 122 -82 -88 -74 >50  
Tree Pipit 25 48 -82 -91 -69 >50  
Spotted Flycatcher 25 105 -82 -87 -75 >50  
Willow Tit 25 40 -82 -91 -72 >50  
Grey Partridge 25 126 -78 -84 -71 >50  
Starling 25 702 -78 -83 -73 >50  
Yellow Wagtail 25 89 -68 -81 -49 >50  
Cuckoo 25 352 -61 -67 -54 >50  
House Sparrow 25 587 -59 -71 -49 >50  
Willow Warbler 25 532 -58 -67 -49 >50  
Yellowhammer 25 529 -57 -62 -50 >50  
Skylark 25 644 -47 -54 -40 >25  
Linnet 25 501 -47 -57 -32 >25  
Mistle Thrush 25 500 -46 -52 -38 >25  
Lapwing 25 266 -43 -58 -16 >25  
Meadow Pipit 25 192 -43 -61 -26 >25  
Little Owl 25 66 -37 -55 -8 >25  
Marsh Tit 25 98 -37 -52 -15 >25  
Bullfinch 25 271 -31 -42 -19 >25  

3a. Table of population alerts for CBC/BBS UK 1996-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Willow Tit 10 60 -64 -72 -51 >50  
Turtle Dove 10 199 -58 -62 -51 >50  
Yellow Wagtail 10 164 -42 -53 -31 >25  
Grey Partridge 10 245 -39 -48 -31 >25  
Spotted Flycatcher 10 222 -32 -38 -16 >25  
Corn Bunting 10 144 -27 -38 -15 >25  

3b. Table of population alerts for CBC/BBS England 1996-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Willow Tit 10 53 -62 -71 -51 >50  
Turtle Dove 10 195 -57 -62 -51 >50  
Cuckoo 10 614 -46 -49 -43 >25  
Yellow Wagtail 10 160 -42 -49 -31 >25  
Starling 10 1394 -36 -39 -32 >25  
Grey Partridge 10 220 -33 -41 -25 >25  
Spotted Flycatcher 10 159 -32 -44 -16 >25  
Tree Pipit 10 73 -30 -47 -7 >25  
Willow Warbler 10 938 -30 -36 -24 >25  
Linnet 10 967 -27 -32 -21 >25  

4a. Table of population alerts for CBC/BBS UK 2001-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Turtle Dove 5 157 -40 -47 -31 >25  
Willow Tit 5 47 -33 -47 -14 >25  
Little Owl 5 101 -25 -39 -13 >25  
Yellow Wagtail 5 149 -25 -35 -14 >25  

4b. Table of population alerts for CBC/BBS England 2001-2006

Species Period
(yrs)		 Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
Turtle Dove 5 155 -40 -47 -30 >25  
Willow Tit 5 40 -34 -51 -17 >25  

 
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This report should be cited as:
Baillie, S.R., Marchant, J.H., Crick, H.Q.P., Noble, D.G., Balmer, D.E., Barimore, C., Coombes, R.H.,
Downie, I.S., Freeman, S.N., Joys, A.C., Leech, D.I., Raven, M.J., Robinson, R.A. & Thewlis, R.M. (2007)
Breeding Birds in the Wider Countryside: their conservation status 2007.
BTO Research Report No. 487. BTO, Thetford. (http://www.bto.org/birdtrends)

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