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Trends of common farmland birds in Europe

(for graph of species’ index click on species name)

Species long-term trend
[%]a)
short term trend
[%]a)
short-term slope (SE)b) migratory
statusc)
Common Kestrel
(Falco tinnunculus)
-35 -39 0.9675 (0.0072) sd
Eurasian Thick-knee
(Burhinus oedicnemus)1)
100 1.1477 (0.0892) ld
Northern Lapwing
(Vanellus vanellus)
-51 -38 0.9630 (0.0089) sd
Black-tailed Godwit
(Limosa limosa)1)
-36 0.9706 (0.0026) ld
Common Wood-pigeon
(Columba palumbus)
63 12 1.0070 (0.0019) sd
European Turtle-dove
(Streptopelia turtur)
-60 -14 0.9905 (0.0049) ld
Crested Lark
(Galerida cristata)1)
106 1.0095 (0.0383) sd
Eurasian Skylark
(Alauda arvensis)
-43 -18 0.9867 (0.0019) sd
Barn Swallow
(Hirundo rustica)
-27 -27 0.9756 (0.0041) ld
Yellow Wagtail
(Motacilla flava)
-15 12 1.0156 (0.0108) ld
Whinchat
(Saxicola rubetra)
-52 0 0.9998 (0.0062) ld
Common Whitethroat
(Sylvia communis)
14 0 1.0155 (0.0028) ld
Red-backed Shrike
(Lanius collurio)
-35 16 1.0089 (0.0098) ld
Woodchat Shrike
(Lanius senator)1)
-25 0.9693 (0.0231) ld
Common Starling
(Sturnus vulgaris)
-32 20 0.9956 (0.0042) sd
Eurasian Tree Sparrow
(Passer montanus)
-50 14 0.9913 (0.0101) sd
European Goldfinch
(Carduelis carduelis)
-10 1 1.0130 (0.0056) sd
Yellowhammer
(Emberiza citrinella)
-38 -18 0.9882 (0.0020) sd
Corn Bunting
(Miliaria calandra)
-62 -15 0.9967 (0.0053) sd

1) Data for long-term trend not available.
a) Trend – change (in %) in an index value between the first and last year of a time period (Long-term trend – over the period 1980-2003, Short-term trend – over the period 1990-2003).
b) Slope – multiplicative trend over a time period considered, reflects average percentage change per year. If the slope value is 1, there is no trend. If > 1, there is a positive trend, if < 1, trend is negative. For instance, 1.08 means 8 % increase per year, 0.93 means 7 % decline per year. Slope standard error in parenthesis (Short-term slope – over the period 1990-2003).
c) Migratory status
sd – short-distance migrant or resident
ld – long-distance migrant.

Petr Voříšek

2006-03-17


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