Chaffinch. Edmund Fellowes

The Chaffinch population has fallen by a quarter in just five years.

Chaffinch Appeal Learn more

Identifying Common Tern and Arctic Tern

BTO bird identification videos are supported by Natureguides

Natureguides kindly provide species video clips for our bird identification videos.

Bird tracking - a masterclass

Phil Atkinson explains the technology behind tracking.

Chaffinch and Greenfinch. Edmund Fellowes

Case Study

What we can learn from 25 years of watching gardens

Exploring the value of a complete quarter-century of weekly garden bird observations from BTO's Garden BirdWatch covering the length and breadth of the country.

Blog

Diversity in birding: why it matters

BTO's Jamey Redway reflects on diversity in birding, and how organisations like BTO play a role in making birding more inclusive.