Identifying Common & Herring Gull
Love them or hate them, you can't (or shouldn't) ignore gulls. Build up your gull ID skills by learning to recognise two ideal reference species from this versatile and varied family: Common Gull and Herring Gull.
BTO bird identification videos are supported by Natureguides
Natureguides kindly provide species video clips for our bird identification videos.
Making the most of BirdTrack data
We have been working to produce useful summaries for bird reports using data from the millions of annual BirdTrack records.
Sustainability and citizen science: estimating the carbon footprint of the Breeding Bird Survey
BTO Data Scientist Simon Gillings explores the results of BTO's investigation into the carbon footprint of biodiversity monitoring.