Bird populations have long been considered to provide a good indication of the broad state of wildlife in England. This is because they occupy a wide range of habitats and respond to environmental pressures that also operate on other groups of wildlife. In addition there are considerable long-term data on changes in bird populations, which help in the interpretation of shorter term fluctuations in numbers.
The bird population indices have been compiled in conjunction with the Royal Society for the Protection of Birds (RSPB), the British Trust for Ornithology (BTO) and the Joint Nature Conservation Committee (JNCC).
Source agency: Environment, Food and Rural Affairs
Designation: National Statistics
Language: English
Alternative title: Populations of wild birds in England
Index=100 1970 Farmland birds,1970 woodland birds, 1975 Water and wetland birds, 1986 Seabirds, 1975/76 Wintering waterbirds.
