About the Authors

Robert P Freckleton

To whom correspondence should be addressed. E-mail: r.freckleton@sheffield.ac.uk

Affiliation Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom

Paul H Harvey

Affiliation Department of Zoology, University of Oxford, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

RPF and PHH jointly ran the simulations and wrote the paper.