About the Authors

Mark O’Hara

mark.ohara@univie.ac.at

Affiliations Department of Cognitive Biology, University of Vienna, Vienna, Austria, Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University of Vienna, Vienna, Austria

Alice M. I. Auersperg

Affiliations Department of Cognitive Biology, University of Vienna, Vienna, Austria, Behavioural Ecology Research Group, Department of Zoology, Oxford University, Oxford, United Kingdom

Thomas Bugnyar

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

Ludwig Huber

Affiliation Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University of Vienna, Vienna, Austria

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MO AMIA TB LH. Performed the experiments: MO. Analyzed the data: MO AMIA TB LH. Contributed reagents/materials/analysis tools: AMIA LH. Wrote the paper: MO AMIA TB LH.