About the Authors
- Barbara A. Caspers
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* E-mail: barbara.caspers@uni-bielefeld.de
Affiliation Department of Animal Behaviour, University of Bielefeld, Bielefeld, Germany
- Frank C. Schroeder
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Affiliation Boyce Thompson Institute and Cornell University, Ithaca, New York, United States of America
- Stephan Franke
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Affiliation Institute of Organic Chemistry, University of Hamburg, Hamburg, Germany
- Christian C. Voigt
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Affiliation Evolutionary Ecology Research Group, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: BAC CCV. Performed the experiments: BAC. Analyzed the data: BAC FCS SF. Contributed reagents/materials/analysis tools: FCS SF. Wrote the paper: BAC SF FCS CCV.