1. Ecology & Evolutionary Biology University of Connecticut 75 North Eagleville Road, Unit 3043 Storrs Connecticut06269 USA
2. The Institute for Bird Populations P.O. Box 518 Petaluma California94953 USA
3. U.S. National Park Service Southern Colorado Plateau Network – Inventory & Monitoring Division 2255 North Gemini Drive Flagstaff Arizona86001 USA
4. Ecology and Evolutionary Biology University of California – Los Angeles 621 Charles E. Young Drive S #951606 Los Angeles California90095 USA