Farmland bird populations declined between 2008 and 2009. The unsmoothed index showed a decline of 5% for England and the smoothed index showed a decline of 3%. Both indices are lower than their lowest recorded value since the 1966 starting value by 53%.
Bird indicators are regarded as being a good indicator of general stat of wildlife because they occupy a wide range of habitats. Twelve of the species included in the index declined between 2008 and 2009 and seven species increased. Many of the species showing a downward trend have been in decline for four or five years. Goldfinch and Jackdaw have shown long-term upward trends.
The indicators of wild bird populations are published by Defra along with the RSPB and the BTO. They show changes in the breeding and wintering populations of common bird species.
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