National Geographic Guide to Bird Sounds

This audio guide to North American birds contains recordings of 180 species. This is a companion guide to the book National Geographic Field Guide to Birds of North America and concentrates on species for which "voice" is very important for identification.

Provides some longer sequences and additional examples of many species not as thoroughly covered on other North American guides.
Author: the National Geographic Society and the Cornell Lab of Ornithology

2-Cassette set $19.95

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