Identifying grey harriers
Harriers are stunning, lithe and elegant birds of prey. Two species of grey harrier are regularly found in the UK, Hen and Montagu's - the males are relatively easy to separate, but the females and young birds can be more tricky.
BTO bird identification videos are supported by Natureguides
Natureguides kindly provide species video clips for our bird identification videos.
BirdTrack migration blog (end of October to mid November)
Even as we reach the beginning of November, autumn migration is still very evident. Birds continue to arrive in the UK from more northerly regions to spend the next few months here in our warmer winters, before...
BTO Data Reports
Our reports provide rigorous scientific information to inform Environmental Impact Assessments in the UK.