Composite indicator of bird populations
Bird populations are relatively well studied and can provide an indication on the changing biodiversity of Scotland's habitats. The number of waterbirds rose between the mid 1980's and mid 1990's and subsequently have stayed relatively stable. Seabird numbers fell by one third between 1991 and 2004. While the number of terrestrial breeding birds has risen since 1994, this follows declines, particularly in farmland birds, in earlier years.

| Source: | BTO | JNCC | RSPB | WWT | SOTEAG |
Further Information
Last updated: February 2007