Calls and identification The territorial hooting call of a male Tawny Owl is probably the most familiar of UK owl calls, beginning with a drawn out ‘hooo’, followed by a brief pause, before a softer ...

The Blackbirds in Gardens project will help us understand how Blackbirds use gardens, and the potential effects of the Usutu virus on their population in the UK. Update: The 2025 spring survey season ...

With their swept-back wings and aerial lifestyle, Hirundines (Swallows, and Sand and House Martins) and similar but unrelated Swifts often cause ID headaches. Let us help you to separate these amazing ...

May and June are busy times for Blue Tits. With eggs to incubate and young chicks getting bigger by the day, the demand for food is constant. Whilst these months mark the end of their breeding season, ...

Reporting ringed birds helps us provide more effective conservation advice So you can see the importance of looking for, and reporting, ringed birds. If you do find a ring, please report it: Report a ...

About BTO Data Reports Reports collate comprehensive and contemporary bird distribution and abundance data from BTO's high quality ornithological datasets to identify species associated with the site ...

The BTO’s Nunnery Lakes Reserve is a County Wildlife Site which lies to the south of Thetford between the Rivers Thet and Little Ouse. It follows a series of lakes created by old gravel workings, and ...

Plumage differences caused by pigmentation changes Changes in the amount and/or distribution of particular feather pigments are some of the most commonly reported types of plumage abnormality. Most ...

The Great Tit is a common visitor to garden bird feeders. Outside urban areas, it is primarily a species of scrub and deciduous woodland. The Great Tit is a striking little bird, with a bluish-green ...

Cheeping flocks of House Sparrow once tumbled from untidy nests and wallowed in urban dust baths. Now the species is in decline and has been on the UK Red List since 2002.Colonial nesters, the male ...

This is a colourful little bird, and a familiar garden favourite. It is also common in woodland, hedgerows, parks and gardens. Blue Tits have distinctive blue-green and yellow plumage and a blue cap.

Become more connected to nature, learn about your garden wildlife and contribute to important scientific research by joining our community of Garden BirdWatchers. Garden BirdWatch volunteers can view ...