1. School of Biological Sciences, University of Bristol, Bristol BS8 1TQ, UK.
2. Department of Biosciences, Swansea University, Swansea SA2 8PP, UK.
3. Department of Animal Behaviour, University of Bielefeld, Post Office Box 100131, 33501 Bielefeld, Germany.
4. Department of Anthropology, Pennsylvania State University, University Park, PA 16802, USA.
5. Department of Psychology, Hunter College and Graduate Center of City University of New York, New York, NY 10065, USA.
6. Department of Animal Biology, University of Illinois, Champaign-Urbana, IL 61801, USA.
7. Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA.
8. Department of Zoology, University of Cambridge, Cambridge CB2 3DT, UK.
9. Department of Biology, Lund University, 22362 Lund, Sweden.
10. Centre of Excellence in Biological Interactions Research, University of Jyväskylä, Jyväskylä 40014, Finland.
11. Queensland Brain Institute, University of Queensland, Brisbane, Queensland 4072, Australia.
12. Department of Evolutionary Biology, Ludwig-Maximilians-Universität, München, Germany.
13. School of Life Sciences, University of Sussex, Brighton BN1 9QG, UK.
14. Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA.
15. Department of Ecology and Evolution, University of Lausanne, CH-1015 Lausanne, Switzerland.
16. Institute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, UK.
17. Department of Biology, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
18. Institute of Neuroscience, Newcastle University, Newcastle NE2 4HH, UK.
19. Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZX, UK.
20. Centre for Ecology and Conservation, University of Exeter, Penryn, Cornwall TR10 9FE, UK.
21. Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA.
22. School of BioSciences, University of Melbourne, Parkville, Victoria 3010, Australia.
23. Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, USA.
24. Department of Wildlife, Fish and Conservation Biology and Center for Population Biology, University of California, Davis, CA 95616, USA.