Peterson Field Guides - Western Bird Songs CD. Edited by Roger Tory Peterson. Sponsored by the National Audubon Society, the National Wildlife Federation, and the Roger Tory Peterson Institute. Here is the western edition of A Field Guide to Bird Songs, the best-selling bird song collection ever recorded. This edition includes the songs and calls of 522 species - all the most common and vocal birds found in western North America. Organized as a companion to Roger Tory Peterson's Field Guide to Western Birds, this is the birder's bible" of bird song. 2 compact discs - Western Bird Songs and The Peterson Field Guide Series. $25.00. A total of approx. 140 minutes of Western Bird Songs. To order by phone call Toll Free 866-596-9982