About the Authors

Renaud Bastien

rbastien@orn.mpg.de

Affiliation Department of Collective Behaviour, Max Planck Institute for Ornithology and Department of Biology, University of Konstanz, Konstanz, Germany

Yasmine Meroz

Affiliation John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RB. Performed the experiments: RB. Analyzed the data: RB YM. Wrote the paper: RB YM.