A Photographic Field Guide to North American Raptors
An essential guide to a difficult group of New World birds. Illustrated with 377 colour photos showing birds of prey in all age, race and colour morph plumages, this is an essential reference work for all raptor enthusiasts. The text describes all 42 species of diurnal birds of prey and there are 14 discussions of the most difficult raptor ID problems. 2nd edition.