About the Authors

Mariam Honarmand

m.honarmand@fu-berlin.de

Affiliations Department of Animal Behaviour, University Bielefeld, Bielefeld, Germany, Department of Animal Behaviour, Freie Universität Berlin, Berlin, Germany

Wolfgang Goymann

Affiliation Max-Planck-Institut für Ornithologie, Abteilung für Verhaltensneurobiologie, Evolutionary and Environmental Physiology Lab, Seewiesen, Germany

Marc Naguib

Affiliations Department of Animal Behaviour, University Bielefeld, Bielefeld, Germany, Department of Animal Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Heteren, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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