Put purely and simply, this is the best bird identification guide I have ancountered. I have many different ones and they all have their charms but for a truly amazing, comprehensive and detailed list of all the birds of Britain and Europe, this wins hands down. The illustrations are beautiful, and incredibly accurate, with details of all plumages (summer/winter/adult/sub-adult/juvenile), and details of sub-species. General behaviour, physical description, and calls and songs are all detailed superbly. I haven't even had this book for 24 hours yet and already I love it - that says quite alot, I think!