1. Department of Natural Resource Management, South Dakota State University, Brookings, SD 57007, U.S.A.
2. University of Montana, Wildlife Biology Program, Department of Ecosystems and Conservation Sciences, W.A. Franke College of Forestry and Conservation, Missoula, MT 59812, U.S.A.
3. United States Department of Agriculture, Wildlife Services, National Wildlife Research Center, Department of Wildland Resources, Utah State University, Logan, UT 84322, U.S.A.
4. United States Army Dugway Proving Ground, Natural Resource Program, Dugway, UT 84022, U.S.A.
5. University of Idaho, Department of Fish and Wildlife Sciences, Moscow, ID 83844, U.S.A.