Peterson Field Guide To Eastern Birds - No platform set

The Peterson field guides employ a unique identification system, which has been called the greatest invention since binoculars. Each guide pinpoints key field marks for quick recognition and easy comparison of species. All guides are illustrated with drawings and photographs in color and black and white, and all provide up-todate range information and the most useful descriptions you'll find anywhere. Measures 4-1/2-inch length by 7-1/4-inch width.