Wales trends
• Trends are percentage changes in bird populations, and are marked with an asterisk (*) where the 95% confidence limits of the change do not overlap zero (indicating that there has been a significant change).
• The trend since the start of the survey, covering the years 1994–2010, has been smoothed, and the end years truncated. This trend is labelled as 1995–2009.
• The sample is the mean number of squares per year on which the species was recorded during 1994–2010.
• LCL and UCL are the lower and upper 95% confidence limits for the 1995–2009 trend.
• Red-listed and amber-listed species from ‘Birds of Conservation Concern 3’ are shown in the relevant colour.
• Trends for species in brackets are reported with caveats.
To view the population trend graph for a species, click on the link in the table. This will jump to the population trend graphs page, with the relevant species graph at the top of the page.
|
Species
|
Sample
|
Change
09–10
|
Sig
|
Change
95–09
|
Sig
|
LCL
|
UCL
|
Graph |
|---|---|---|---|---|---|---|---|---|
|
Mallard
|
63
|
10
|
|
-13
|
|
-54
|
57
|
Graph |
|
Pheasant
|
88
|
13
|
|
51
|
*
|
13
|
96
|
Graph |
|
(Grey Heron)
|
42
|
-14
|
|
-4
|
|
-32
|
34
|
Graph |
|
Buzzard
|
136
|
-22
|
|
5
|
|
-16
|
31
|
Graph |
|
Curlew
|
36
|
21
|
|
-49
|
*
|
-64
|
-33
|
Graph |
|
Feral Pigeon
|
32
|
-24
|
|
38
|
|
-10
|
108
|
Graph |
|
Woodpigeon
|
181
|
37
|
|
39
|
*
|
14
|
71
|
Graph |
|
Collared Dove
|
69
|
12
|
|
58
|
*
|
9
|
113
|
Graph |
|
Cuckoo
|
56
|
48
|
|
-34
|
*
|
-51
|
-14
|
Graph |
|
Swift
|
65
|
17
|
|
-50
|
*
|
-66
|
-22
|
Graph |
|
Green Woodpecker
|
46
|
26
|
|
-5
|
|
-31
|
29
|
Graph |
|
Great Spotted Woodpecker
|
71
|
-2
|
|
178
|
*
|
118
|
276
|
Graph |
|
Skylark
|
101
|
-14
|
|
-20
|
*
|
-40
|
-1
|
Graph |
|
Swallow
|
165
|
-15
|
*
|
25
|
*
|
3
|
47
|
Graph |
|
House Martin
|
84
|
17
|
|
-2
|
|
-26
|
27
|
Graph |
|
Tree Pipit
|
31
|
83
|
*
|
-26
|
|
-52
|
27
|
Graph |
|
Meadow Pipit
|
84
|
-11
|
|
-16
|
*
|
-28
|
-3
|
Graph |
|
Pied Wagtail
|
111
|
-23
|
|
-9
|
|
-26
|
14
|
Graph |
|
Wren
|
190
|
-9
|
*
|
1
|
|
-13
|
11
|
Graph |
|
Dunnock
|
146
|
16
|
|
38
|
*
|
13
|
65
|
Graph |
|
Robin
|
186
|
-12
|
*
|
6
|
|
-4
|
15
|
Graph |
|
Redstart
|
55
|
28
|
|
10
|
|
-15
|
38
|
Graph |
|
Stonechat
|
35
|
-4
|
|
141
|
*
|
39
|
305
|
Graph |
|
Wheatear
|
50
|
35
|
|
-15
|
|
-41
|
13
|
Graph |
|
Blackbird
|
190
|
2
|
|
43
|
*
|
29
|
58
|
Graph |
|
Song Thrush
|
162
|
-16
|
*
|
31
|
*
|
14
|
52
|
Graph |
|
Mistle Thrush
|
97
|
24
|
|
2
|
|
-25
|
37
|
Graph |
|
Blackcap
|
113
|
22
|
*
|
74
|
*
|
42
|
116
|
Graph |
|
Garden Warbler
|
55
|
5
|
|
-15
|
|
-41
|
18
|
Graph |
|
Whitethroat
|
78
|
4
|
|
-9
|
|
-25
|
13
|
Graph |
|
Chiffchaff
|
130
|
6
|
|
31
|
*
|
10
|
56
|
Graph |
|
Willow Warbler
|
155
|
1
|
|
-10
|
|
-24
|
6
|
Graph |
|
Goldcrest
|
78
|
11
|
|
-52
|
*
|
-73
|
-15
|
Graph |
|
Long-tailed Tit
|
58
|
-3
|
|
21
|
|
-12
|
62
|
Graph |
|
Coal Tit
|
70
|
-2
|
|
-11
|
|
-43
|
32
|
Graph |
|
Blue Tit
|
171
|
16
|
*
|
13
|
|
-3
|
29
|
Graph |
|
Great Tit
|
164
|
8
|
|
51
|
*
|
27
|
77
|
Graph |
|
Nuthatch
|
67
|
19
|
|
33
|
*
|
3
|
77
|
Graph |
|
Treecreeper
|
39
|
1
|
|
1
|
|
-37
|
51
|
Graph |
|
Jay
|
68
|
36
|
|
48
|
*
|
9
|
91
|
Graph |
|
Magpie
|
157
|
8
|
|
-10
|
|
-23
|
1
|
Graph |
|
Jackdaw
|
134
|
17
|
|
29
|
|
-15
|
102
|
Graph |
|
Rook
|
76
|
59
|
|
-13
|
|
-43
|
32
|
Graph |
|
Carrion Crow
|
195
|
9
|
|
1
|
|
-17
|
20
|
Graph |
|
Raven
|
85
|
16
|
|
29
|
|
-19
|
144
|
Graph |
|
Starling
|
80
|
-1
|
|
-63
|
*
|
-73
|
-45
|
Graph |
|
House Sparrow
|
117
|
18
|
*
|
87
|
*
|
44
|
141
|
Graph |
|
Chaffinch
|
191
|
12
|
*
|
-8
|
|
-21
|
6
|
Graph |
|
Greenfinch
|
109
|
6
|
|
9
|
|
-17
|
40
|
Graph |
|
Goldfinch
|
121
|
5
|
|
59
|
*
|
27
|
112
|
Graph |
|
Linnet
|
90
|
38
|
*
|
-31
|
*
|
-52
|
-1
|
Graph |
|
Bullfinch
|
60
|
-22
|
|
-18
|
|
-39
|
11
|
Graph |
|
Yellowhammer
|
36
|
10
|
|
-35
|
*
|
-59
|
-13
|
Graph |
