Frog and Toad Calls of the Rocky Mountains; Vanishing Voices.Includes 38 species of frogs and toads that occur in the Rocky Mountains and Southwestern states and provinces: Yukon, Northwest Territories, Alberta, Saskatchewan, Montana, Idaho, Wyoming, Colorado, Utah, Nevada, Arizona, and New Mexico.
Includes a 28-page booklet with descriptions of calls and breeding habitats for each species, with tips on learning and identifying calls. Includes an audio test section.
This production is a collaboration between the U.S. Forest Service and the Cornell Laboratory of Ornithology.
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