1. Department of Evolutionary Ecology, Estación Biológica de Doñana—CSIC, c/Americo Vespucio, 26, 41092 Seville, Spain
2. MTA-ELTE Theoretical Biology and Evolutionary Ecology Research Group, Department of Plant Systematics, Ecology and Theoretical Biology, Eötvös Loránd University, Budapest H-1117, Hungary
3. Coates Library, Trinity University, San Antonio, TX 78212, USA
4. Biological Sciences Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
5. Department of Biology, Wake Forest University, Winston-Salem, NC 27109, USA
6. Max Planck Institute for Ornithology, Seewiesen 82319, Germany
7. University of Konstanz, Konstanz 78464, Germany
8. Department of Biology, University of St. Thomas, St. Paul, MN 55105, USA
9. Department of Biology, Trinity University, San Antonio, TX 78212, USA
10. Department of Biology, University of Florida, Gainesville, FL 32608, USA
11. Department of Biology, University of Oklahoma, Norman, OK 73019, USA
12. Department of Global Health, University of South Florida, Tampa, FL 33620, USA
13. Cornell Lab of Ornithology, Ithaca, NY 14850, USA
14. Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, USA
15. Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA
16. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada