Cornell Laboratory of Ornithology, with Roger Tory Peterson
Designed to accompany Peterson's Field Guide to Western Birds this guide covers the songs and calls of all the common species (over 500 in all) of Western North America and the Hawaiian Islands, with a full explanatory booklet. Now available as a single CD or a two cassette pack.
1 CD in plastic case 28 pp booklet
2 C60 cassettes in vinyl case 28 pp booklet