About the Authors

Friedrich Ladich

friedrich.ladich@univie.ac.at

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

Tanja Schulz-Mirbach

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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