Peterson Birding By Ear 3pk CD Eastern/central
By Richard K. Walton and Robert W. Lawson. Edited by Roger Tory Peterson and sponsored by the National Audubon Society, the National Wildlife Federation and the Roger Tory Peterson Institute. This Guide enables users to recognize birds by their songs and calls. 86 common species are arranged into 17 intelligible learning groups, such as, whistlers, name sayers, and mimics. Includes 3 audio CDs and a 64 page mini-guide booklet.