One of the standard and most well known naturalist guides, the National Audubon Society's Field Guide to Birds: Eastern Region includes stunning photographs as well as easily located descriptions and facts. With 646 full-color, half-page photographs, you'll be able to identify any bird that swoops across your path. Descriptions are numbered to align with the photographs, and include notes on their voice, habitat, nesting habits, range, offical and colloquial names, and physical description. 796 indexed pages, plastic-coated softcover for outdoor durability. 4' x 7.75'.