The essential guide for ringers working in the field and birdwatchers. Designed and written by Lars Svensson to help determine species, age and sex of birds in the hand.
Paperback reprint of 4th edition.
This Ringer's bible is completely revised and updated to include 229 species, with valid subspecies, of passerines regularly occurring in Europe, plus some rare vagrants. Data include wing formulae, measurements, plumage, and other criteria for determining sex and age. It also includes indices of English, Finnish, French, German and Swedish names. It is an invaluable text for any ringer or keen birder.