BTO has been at the forefront of bird monitoring and research since we were founded in 1933, and since that time we have accrued a vast body of knowledge. Sharing our understanding of birds is an important part of our work, helping to invigorate and inform our vital volunteer base and inspire the next generation of ornithologists to tackle the conservation challenges of the future.
BTO strives to provide a deeper understanding of birds their behaviour. BirdFacts is a one-stop shop for data on British birds.Read our masterclass articles covering one aspect of ornithology in depth. Let us recommend what to read next in our book reviews.
Search for a bird species on BirdFacts
BirdFacts gives in depth information about all of the bird species recorded in the wild in Britain. For each one, BirdFacts is a one stop shop for details of its abundance, distribution, population trends, demographic factors and biometrics, along with other fascinating facts and trivia.
Our masterclasses provide informative and authoritative takes on different areas of bird behaviour and biology from BTO staff and guest experts.
Let us help you pick your next bird book, with informative reviews of the latest ornithological literature by BTO staff and volunteers.
The urban sprawl
BTO's Head and Principal Ecologist, Gavin Siriwardena, explains how the urban landscape is affecting our wild bird populations.
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.