1. Department of Ecology and Evolutionary Biology, Tulane University , New Orleans, LA , USA
2. Department of Ecology and Evolutionary Biology, Cornell University , Ithaca, NY , USA
3. Fuller Evolutionary Biology Program, Lab of Ornithology , Ithaca, NY , USA
4. Department of Biological Engineering, University of California Santa Cruz , Santa Cruz, CA , USA
5. Department of Behavioural Neurobiology, Max Planck Institute for Biological Intelligence , Seewiesen , Germany
6. Department of Biology, University of Nevada, Reno , Reno, NV , USA
7. Department of Biological Sciences, The University of Tulsa , Tulsa, OK , USA
8. School of Biological Sciences, The University of Hong Kong , Hong Kong , China
9. Department of Organismic and Evolutionary Biology, Harvard University , Cambridge, MA , USA
10. Museum of Comparative Zoology, Harvard University , Cambridge, MA , USA
11. School of Biological Sciences, Washington State University , Pullman, WA , USA
12. Macaulay Library, Cornell Laboratory of Ornithology , Ithaca, NY , USA
13. Department of Neurobiology and Behavior, Cornell University , Ithaca, NY , USA