About the Authors

Sean A. Rands

sean.rands@bristol.ac.uk

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

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

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