Affiliation: | 1. Montana Fish, Wildlife and Parks, Helena, MT, 59620 USA;2. Wildlife Biology Program, College of Forestry and Conservation, University of Montana, Missoula, MT, 59812 USA;3. Montana Fish, Wildlife and Parks, Missoula, MT, 59804 USA;4. U.S. Geological Survey, Montana Cooperative Wildlife Research Unit, University of Montana, Missoula, MT, 59812 USA |