1. Max Planck Institute for Ornithology; Vogelwarte Radolfzell; Schlossallee 2 Radolfzell D-78315 Germany
2. Whitney R. Harris; World Ecology Center; University of Missouri-St. Louis; B216 Benton Hall One University Boulevard St. Louis MO 63121-4400 U.S.A
3. WildCare Institute; Saint Louis Zoo; 1 Government Drive St. Louis MO 63110 U.S.A
4. Department of Biology; Washington University; Campus Box 1137 1 Brookings Drive St. Louis MO 63130 U.S.A
5. 247 Illick Hall; State University of New York College of Environmental Science and Forestry; 1 Forestry Drive Syracuse NY 13210 U.S.A
6. Charles Darwin Foundation; Isla Santa Cruz Puerto Ayora Casilla Quito Galápagos 17-01-3891 Ecuador
7. Institute for Conservation Medicine; Saint Louis Zoo; 1 Government Drive St. Louis MO 63110 U.S.A
8. U.S. Geological Survey; Southwest Biological Science Center; Grand Canyon Monitoring and Research Center; 2255 North Gemini Drive (Mail Stop 9394) Flagstaff AZ 86001 U.S.A