1. Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, W. A. Franke College of Forestry and Conservation; University of Montana; Missoula MT 59812 USA
2. U.S. Geological Survey, Montana Cooperative Wildlife Research Unit, Wildlife Biology Program, 205 Natural Resource Building; University of Montana; Missoula MT 59812 USA
3. Oregon Department of Fish and Wildlife; 1401 Gekeler Lane La Grande OR 97850 USA
4. Colorado Parks and Wildlife; 415 Turner Drive Durango CO 81303 USA
5. U.S. Geological Survey, Wyoming Cooperative Fish and Wildlife Research Unit, Department of Zoology and Physiology; University of Wyoming; Laramie WY 82071 USA
6. Montana Department of Fish, Wildlife and Parks; 1400 South 19th Street Bozeman MT 59718 USA
7. Idaho Department of Fish and Game; 3316 16th St Lewiston ID 83501 USA
8. Departments of Zoology and Botany; University of British Columbia; Vancouver BC Canada
9. Utah Division of Wildlife Resources; Salt Lake City UT 84114 USA
10. Colorado Parks and Wildlife; 317 W. Prospect Rd. Fort Collins CO 80526 USA
11. Idaho Department of Fish and Game; P.O. Box 25 Boise ID 83707 USA
12. Washington Department of Fish and Wildlife; 1701 S 24th Ave Yakima WA 98902 USA
13. Yale School of Forestry and Environmental Studies; 370 Prospect Street New Haven CT 06511 USA
14. Montana Cooperative Wildlife Research Unit; University of Montana; 205 Natural Science Building Missoula MT 59812 USA
15. Wildlife Biology Program; University of Montana; Missoula MT 59812 USA
16. U.S. Geological Survey; National Wildlife Health Lab; Madison WI 53711 USA
17. Yellowstone National Park; Mammoth, P.O. Box 168 WY 82190 USA