Welcome to BirdFacts
Information about Britain's birds, where they live, what they do, and links to the latest survey results.
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Into the Red
Almost a third of UK bird species are in population free fall.
Into the Red is a collaboration between 70 artists and 70 writers united by one goal: to raise funds for the conservation of the UK's most at-risk birds.
More information about BirdFacts. For details on each type of data, click the relevant ? button on the species listing page.
If you spot any errors, missing information, or have a picture we could use for a species that does not have one already, please email us: birdfacts [at] bto.org.
Seen a bird you can't identify? Try to take a photograph and visit the iSpot website for help.
BTO is dedicated to tackling the challenge of avian influenza. Learn about the disease, its impact on our wild birds and BTO's efforts to mitigate its impacts.
BTO Data Reports
Our reports provide rigorous scientific information to inform Environmental Impact Assessments in the UK.