1. California Department of Fish and Wildlife, 715 P Street, Sacramento, CA
2. the Behavioral and Molecular Ecology Research Group, Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI 53211
3. Arizona Game and Fish Department, 5000 W. Carefree Highway, Phoenix, AZ 85086
4. the Mammalian Ecology and Conservation Unit, Veterinary Genetics Laboratory, University of California, One Shields Avenue/Old Davis Road, Davis, CA 95616–8744