This easy-to-use guide features 636 North American bird species and more than 2,000 stunning color photographs. And yet it's portable enough to fit in your pocket! The guide includes: the newest scientific and common names and phylogenetic order; special help for identifying birds in flight through important clues of behavior, plumage, and shape; detailed descriptions of songs and calls; important behavioral information and key habitat preferences; the newest range maps, detailing species' winter, summer, year-round ranges, and migration routes.