Very good hardcover. Spotting to the top edge of boards. As new dust jacket. Maps of breeding distribution. Covers 460 species, including 206 breeders and almost 100 documented vagrants. Text contains maps for 130 selected breeding species, 21 b/w illustrations by Barry Van Dusen. Includes seasonal abundance, habitat preference, locality information, early and late seasonal dates, and maxima for each species. Inscribed by Petersen on the half title.