Key Facts about: Wildlife
Changes in woodland bird populations, by region: 1994 and 2006
England
Between 1994 and 2006 the index of woodland birds for England fell by 7 per cent .
In 6 of the 8 regions shown on this map, more species of woodland birds increased than declined over the period. The only region with more species in decline than increasing was the South East. There were equal number of species increasing and decreasing in the South West.
These indices, based on recent research, are considered to be provisional. Although the indices are consistent with the national wild bird population indicator, they should be used with caution as they are subject to quite large sampling uncertainties.
Comparisons between regions also need to be interpreted with caution because geographical variations in the numbers of species recorded in the British Breeding Birds Survey (BBS) mean that each regional indicator could cover a different subset of species from other regions or the national indicators. However, the current results have been derived using a revised methodology from that used in previous years that allows trends to be included for those more scarce species in each region previously excluded.
- Source:
- Defra, RSPB, BTO
- Press Release:
- Bulletin, 22 May 2008: Wild bird indices for the English regions
- See also:
- Regional Wild Bird Indicators
- Bird populations
- Population of wild birds, Changes in farmland bird populations
- Sustainable Development Indicators:
- UK Government Sustainable Development Strategy indicators
- Data Tables:
- Download Chart Data: Microsoft Excel
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Page last modified: 3 June 2008
Page published: 16 March 2006