About the Authors

Benjamin D. Charlton

b.d.charlton@sussex.ac.uk

Current address: School of Psychology, University of Sussex, Brighton, East Sussex, United Kingdom

Affiliation Department of Cognitive Biology, University of Vienna, Vienna, Austria

David Reby

Affiliation School of Psychology, University of Sussex, Brighton, East Sussex, United Kingdom

William A. H. Ellis

Affiliation Koala Research Centre of Central Queensland, Central Queensland University, Rockhampton, Queensland, Australia

Jacqui Brumm

Affiliation Lone Pine Koala Sanctuary, Brisbane, Queensland, Australia

W. Tecumseh Fitch

Affiliation Department of Cognitive Biology, University of Vienna, Vienna, Austria

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BDC. Performed the experiments: BDC WAHE. Analyzed the data: BDC. Contributed reagents/materials/analysis tools: JB WTF. Wrote the paper: BDC DR.