Seabirds across the UK, and globally, are in trouble. Many species, from Puffins and Fulmars to gulls and terns are experiencing declines in their breeding numbers. A key reason is that seabirds rely ...

This report provides an assessment of the 2025 breeding season in terms of population sizes and breeding success, comparing this year’s results to the averages recorded over the previous five seasons.

Data from the Heronries Census and the Rare Breeding Birds Panel (RBBP) were combined to produce population estimates for Little Egret. The population was estimated at 2,236 pairs / apparently ...

House Sparrow perched on a beam, by Amy Lewis / BTO The UK is home to 73 million fewer birds today than it was in 1970, according to research from the British Trust for Ornithology (BTO) published ...

A devastating wave of high pathogenicity avian influenza (HPAI / bird flu) has triggered an unprecedented global wildlife emergency, decimating seabird and waterbird colonies across the UK and beyond.

For migrant birds, there are both ‘push’ and ‘pull’ factors that drive their migration. Typically, it’s a mix of factors. Different species also migrate at different times, and in different ways - in ...

Moult is a fascinating basic life history event in birds which, despite its major impact on their life cycle, is relatively poorly understood and even neglected. This is a companion to the excellent ...

The report provides a single, comprehensive source of information on the current status and distribution of waterbirds in the UK for those interested in the conservation of the populations of these ...

A pair of Hoopoes succeeded in raising three young from a nest in farmland in Leicestershire and Rutland. This distinctive species from southern Europe, its plumage a combination of salmon-pink and ...

A new report published today by the British Trust for Ornithology (BTO), in partnership with RSPB and JNCC, reveals impacts of Avian Influenza on Mute Swans across the UK. The Wetland Bird Survey ...

A passive bat detector, left outside to automatically trigger and record bat calls as they fly over, set up in a garden in West Sussex as part of the Chichester Bat Recording Project, has recorded the ...

The change in behaviour is one of the most remarkable signs yet of the warming world being caused by climate change, according to the BTO’s Chief Executive, Juliet Vickery, “It is indeed remarkable.