1. Haub School of Environment and Natural Resources Wyoming Cooperative Fish and Wildlife Research Unit Department of Zoology and Physiology University of Wyoming 804 E. Fremont Street Laramie Wyoming 82072 USA
2. U.S. Geological Survey Wyoming Cooperative Fish and Wildlife Research Unit Department of Zoology and Physiology Department 3166 University of Wyoming 1000 East University Avenue Laramie Wyoming 82071 USA
3. The Nature Conservancy 258 Main Street Lander Wyoming 82520 USA
4. Western Ecosystems Technology, Inc. 200 South 2nd Street Laramie Wyoming 82070 USA