Volunteer, by Kat Booth Jones / BTO

Capturing data in the field with citizen science and species expertise

Browse the range of active BTO projects, schemes and surveys. Learn what they contribute to science, and how to participate.

Show me projects needing...
Greenfinch. Photograph by Jill Pakenham

Garden Wildlife Health

Tell us about sick and diseased wildlife found in your garden. Garden BirdWatch participants can also add observations when entering their usual GBW counts.

Learn more

Grey Heron. Photograph by John Harding

Contributions & findings

  • The latest Grey Heron population trends from the Heronries Census are discussed on the Grey Heron page in the BTO's BirdTrends report.
  • The modelled annual population estimates for the UK, now spanning more than 80 years, show a long-term increase.

Wader Calendar

The Wader Calendar is a quick and easy way for farmers to record waders on their farm and contribute to a national monitoring scheme.

Learn more

WeBS counting. Photograph by Teresa Frost

Contributions & findings

  • 3.75 million waterbirds are counted for WeBS each year.
  • WeBS produces annual indices for 110 waterbird species or populations
  • Species totals published annually for over 2,700 sites as open data on the WeBS Report Online