Welcome to BTO

Looking out for birds? Share your interest in birds with others by being part of the British Trust for Ornithology (BTO). Volunteer surveyors, members and staff work in partnership to provide unbiased information about birds and their habitats. Join or volunteer today and make birds count.

BirdTrack migration blog – early spring

It may still feel like winter but for some species, the increasing temperatures and lengthening days have already kick-started spring migration, with birds starting to arrive and depart across Britain and Ireland.

Case Study

BTO Data Reports

Our reports provide rigorous scientific information to inform Environmental Impact Assessments in the UK.

Tagged Lesser Black-backed Gull. Gary Clewley

Article

Bird tracking

Phil Atkinson explains the technology behind tracking.

Welcome to BTO

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BirdTrack migration blog – early spring

BTO Data Reports

Bird tracking