1. Fisheries, Wildlife/Conservation Biology, University of Minnesota-Twin Cities, Room 135, Skok Hall, 2003 Upper Buford Circle, St. Paul, MN 55108, USA.
2. US Geological Survey, Northern Prairie Wildlife Research Center, 8711-37th Street SE, Jamestown, ND 58401, USA.
3. W.A. Franke College of Forestry and Conservation, University of Montana-Missoula, 32 Campus Drive, Missoula, MT 59812, USA.
4. Department of Wildland Resources, Utah State University, 5230 Old Main Hill, Logan, UT 84322, USA.
5. Yellowstone Center for Resources, P.O. Box 168, Yellowstone National Park, WY 82190, USA.