About the Authors

Michelle L. Hall

hall.m@unimelb.edu.au

Affiliations Vogelwarte Radolfzell, Max Planck Institute for Ornithology, Radolfzell, Germany, Department of Zoology, University of Melbourne, Melbourne, Victoria, Australia

Sjouke A. Kingma

Affiliations Vogelwarte Radolfzell, Max Planck Institute for Ornithology, Radolfzell, Germany, School of Biological Sciences, University of East Anglia, Norwich, United Kingdom

Anne Peters

Affiliations Vogelwarte Radolfzell, Max Planck Institute for Ornithology, Radolfzell, Germany, School of Biological Sciences, Monash University, Clayton, Victoria, Australia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Data interpretation: MLH SAK AP. Conceived and designed the experiments: MLH. Performed the experiments: MLH. Analyzed the data: MLH. Contributed reagents/materials/analysis tools: AP. Wrote the paper: MLH SAK AP.