Identification Guide to North American Passerines: A Compendium of Information on Identifying, Aging, and Sexing Passerines in the Hand

A detailed manual for the identification of North American song birds. The guide utilizes a dichotomous key structure. It's particularly helpful for bird bankers who are often challenged to identify the age, sex or subspecies of a bird in the hand. For advanced birders it offers identification details not easily found elsewhere