Identifying Hirundines and Swift
With their swept back wings and aerial lifestyle hirundines (Swallow, Sand and House Martins) and the similar, but unrelated, Swift often cause ID headaches. Let us help you to separate these amazing summer visitors.
BTO bird identification videos are supported by Natureguides
Natureguides kindly provide species video clips for our bird identification videos.
BTO Data Reports
Our reports provide rigorous scientific information to inform Environmental Impact Assessments in the UK.