1. U.S. Fish and Wildlife Service Montana Fish and Wildlife Conservation Office 4052 Bridger Canyon Road Bozeman, Montana 59715 USA
2. Department of Natural Resource Management College of Agriculture, Food and Environmental Sciences South Dakota State University Brookings South Dakota 57007 USA
3. U.S. Fish and Wildlife Service Montana Fish and Wildlife Conservation Office 2900 4th Avenue North, Room 301 Billings, Montana 59715 USA