About the Authors
- Dik Heg
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* E-mail: dik.heg@iee.unibe.ch
Affiliation Department of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Hinterkappelen, Switzerland
- Michael Taborsky
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Affiliation Department of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Hinterkappelen, Switzerland
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: DH MT. Performed the experiments: DH. Analyzed the data: DH. Wrote the paper: DH.