About the Authors
- Alexander Kotrschal, Barbara Taborsky
- Behavioral Ecology, Institute of Ecology and Evolution, University of Bern, Bern, Switzerland
- Barbara Taborsky
- Evolution and Ecology Program, International Institute of Applied Systems Analysis, Laxenburg, Austria
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: AK BT. Performed the experiments: AK. Analyzed the data: AK. Contributed reagents/materials/analysis tools: BT. Wrote the paper: AK BT.