About the Authors
- Walter Jetz
- Division of Biological Sciences, University of California San Diego, La Jolla, California, United States of America
- Cagan H Sekercioglu
- Center for Conservation Biology, Department of Biology, Stanford University, Stanford, California, United States of America
- Katrin Böhning-Gaese
- Institut für Zoologie, Abteilung Ökologie, Johannes Gutenberg-Universität, Mainz Germany
The authors have declared that no competing interests exist.
WJ conceived and designed the experiments. WJ analyzed the data. WJ, CHS, and KBG contributed reagents/materials/analysis tools. WJ, CHS, and KBG wrote the paper.