"The Birder’s Bible" for more than 60 years, Roger Tory Peterson’s classic Field Guide to Western Birds includes all species found in North America west of the 100th meridian and north of Mexico. Featuring the unique Peterson Identification System, Western Birds contains 165 full-color paintings that show more than 1,000 birds from 700 species. Summer and winter ranges, breeding grounds, and other special range data are shown on easy-to-read range maps. Roger Tory Peterson, one of the world's greatest naturalists, received every major award for ornithology, natural science, and conservation, as well as numerous honorary degrees, medals, and citations, including the Presidential Medal of Freedom. The Peterson Identification System has been called the greatest invention since binoculars, and the Peterson Field Guides are credited with helping to set the stage for the environmental movement.