1. Department of Wildlife, Humboldt State University, 1 Harpst St., Arcata, CA 95521 USA; cara.appel@oregonstate.edu
2. Pacific Northwest Research Station, USDA Forest Service, 3625 93rd Ave., Olympia, WA 98512 USA
3. Institute for Natural Resources, Oregon State University, 170 SW Waldo Place, Corvallis, OR 97331 USA
4. North Central Region and Central Region, California Department of Fish and Wildlife, 1701 Nimbus Rd. Ste. A, Rancho Cordova, CA 95630 USA
5. Ministry of Forests, Lands, Natural Resource Operations & Rural Development, PO Box 9525 Stn Prov Govt, Victoria, BC V8W 9C3 Canada
6. Department of Wildlife, Humboldt State University, 1 Harpst St., Arcata, CA 95521 USA