CD version of STOKES FIELD GUIDE TO BIRD SONGS: WESTERN REGION offers you the very best recordings available for the birds of western North America. It includes 551 species—more species, more time per species, and more sounds per species than any other guide to western bird sounds. In addition, the sounds are accompanied by an informative booklet that gives descriptions of the circumstances under which the calls were given as well as the month and state or province in which they were given. It is a marvelous companion to the best-selling book Stokes Field Guide to Birds: Western Region and complements Stokes Field Guide to Birds: Eastern Region and the audio program Stokes Field Guide to Bird Songs: Eastern Region.