About the Authors

Sean A. Rands


Affiliation Centre for Behavioural Biology, University of Bristol, School of Veterinary Science, Langford, Bristol, United Kingdom

Competing Interests

SAR is on the editorial board of PLoS ONE.

Author Contributions

Conceived and designed the experiments: SAR. Performed the experiments: SAR. Analyzed the data: SAR. Wrote the paper: SAR.