Population trend graphs
The latest BBS report includes an annual update of population trends, specifically along waterways, for 28 species with the strongest association with that habitat type. These trends are repeated in the table below. Trends are derived from the entire WBBS data sets, and date back to 1999.
The Breeding Bird Survey Report and WBBS population trends
A full summary of the 2022 WBBS season and the latest WBBS population trends can be found in the WBBS pages (pages 33-35) of the Breeding Bird Survey Report.
These trends are also available for download in spreadsheet format:
This table shows the percentage changes in bird populations during the specified periods. Trends for species in brackets are reported with caveats: Cormorant, Grey Heron and Common Tern are reported with the caveat that counts may contain a high proportion of birds away from breeding sites.
BirdTrends and WBBS
BirdTrends contains information on methodology details and a discussion of each species - for which we produce WBBS trends - in a broader context.
Paper call for special HPAI issue
We are putting together a special issue of the BTO journal Bird Study to bring together research documenting the HPAI outbreak and its impacts on wild birds.
BirdTrack migration blog (end of October to mid November)
Even as we reach the beginning of November, autumn migration is still very evident. Birds continue to arrive in the UK from more northerly regions to spend the next few months here in our warmer winters, before...