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Compressed from .wav format into .mp3 delivery format
J. Willard Marriott Library, University of Utah, Salt Lake City, Utah 84112; Ecological and animal data provided by NatureServe. NatureServe Explorer: An online encyclopedia of life [web application]. Version 6.1. NatureServe, Arlington, Virginia. Available http://www.natureserve.org/explorer
A large group of pacific chorus frogs calling at night from a pond
Recording begins with one frog breaking the silence, then others quickly follow until the chorus rises in volume before it is faded out; This is the typical sound of a large chorus of these frogs, which often continues for more than ten minutes