[1] Colorado State Univ, Warner Coll Nat Resources, Human Dimens Nat Resources Dept, 1401 Campus Delivery, Ft Collins, CO 80523 USA
[2] Colorado Pk & Wildlife, Denver, CO USA
[3] Texas A&M Univ, Dept Ecol & Conservat Biol, College Stn, TX 77843 USA
[4] Calif Environm Associates, San Francisco, CA USA
[5] US Fish & Wildlife Serv, Washington, DC USA
[6] Defenders Wildlife, Washington, DC USA
[7] Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA
[8] Colorado State Univ, Dept Fish Wildlife & Conservat Biol, Ft Collins, CO 80523 USA