About the Authors

Marc Naguib

To whom correspondence should be addressed. E-mail: mnaguib@uni-bielefeld.de

Affiliation Faculty of Biology, Animal Behavior, University of Bielefeld, Bielefeld, Germany

Andrea Nemitz

Affiliation Faculty of Biology, Animal Behavior, University of Bielefeld, Bielefeld, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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