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.
Scotland's winter visitors: why and how do they migrate?
From geese and swans to thrushes and warblers, discover the secrets of our winter birds' migration.