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Contributing Institution
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]. NatureServe, Arlington, Virginia. Available http://www.natureserve.org/explorer.
Sounds were recorded between 9 - 10 PM along the Colorado River; Air temperature was 60 degrees Fahrenheit; Elevation approx. 500 feet; Local Time: Approximately 9:00 PM to 10:00 PM