The American wood warblers are similar in in size, shape and habits to the old world warblers, to which they are not at all related, though they are generally rather more colourful, particularly the ...

Frigatebirds are highly maneuverable aerial predators of tropical waters. The five species all breed in large colonies in trees on tropical islands. During courtship the males (which are mostly black) ...

BTO Research Reports are scientific papers that have been self-published by the BTO. The following is a full list of the published BTO research reports. Most are free to download, and links to ...

‘Biodiversity’ describes the variety of life in an area. It can be measured in areas as small as a back garden and as big as the entire Earth, and encompasses everything from genetic diversity and ...

This small family of waders is charcterised by slender bodies and long wings; the pratincoles also have very short legs. They are charcteristic of open semi-desert habitat in Africa, Asia and ...

Spend any time watching your gardens birds and you'll soon discover a host of different behaviours. It might be a Blackbird preening its feathers, a group of Starlings whirling about the sky in a ...

Upcoming events for BTO volunteers and supporters in Scotland. Be one of the first to know about future training courses, events and our wider work in Scotland by signing up to receive the BTO ...

Commonly referred to as the UK Red List for birds, the status of birds has now been reviewed five times, covering the UK, Channel Islands and Isle of Man. The latest review was published in December ...

We were proud to host Bird Camps in all four countries again in 2024! BTO Youth organised Bird Camps in England, Wales and Northern Ireland, and worked in partnership with our friends at SOC for a ...

BTO data and expertise are continuing to make a significant contribution to our understanding of climate change impacts on birds, and informing mitigation and adaptation responses. An increasing body ...

Welcome to the BTO Acoustic Pipeline Support Hub. Here you can find guides, technical requirements, information about equipment and other resources to help you ...

Collecting information on birds’ breeding success by monitoring nests, whether in your garden or out in the wider countryside, is a hugely enjoyable and rewarding experience that provides incredibly ...