This easy-to-use guide features 545 North American bird species and more than 2,000 stunning color photographs. And yet it's portable enough to fit in your pocket! The photographs cover all significant plumages, including male, female, summer, winter, immature, morphs, important subspecies, and birds in flight. 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.