Document Type: Research Article
Affiliations: 1: Wind River Ranch Foundation, P.O. Box 27, Watrous, NM 87753, USA; Denver Zoological Foundation, 2300 Steele Street, Denver, CO 80205, USA. 2: University of Wyoming, Department of Zoology and Physiology, Box 3166, University Station, Laramie, WY 80271, USA. 3: USGS, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, CO 80526, USA. 4: Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR 97331, USA.
Publication date: January 5, 2012