About the Authors

Manfred Hartbauer


Affiliation Behavioural Ecology Group, Department of Zoology, Karl-Franzens University Graz, Graz, Austria

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MH. Performed the experiments: MH. Analyzed the data: MH. Contributed reagents/materials/analysis tools: MH. Wrote the paper: MH.