About the Authors

Volker Salewski

Affiliation Michael-Otto-Institut im NABU, Bergenhusen, Germany

Karl-Heinz Siebenrock

Affiliation Max-Planck-Institute for Ornithology, Department of Migration and Immuno-ecology, Radolfzell, Germany

Wesley M. Hochachka

Affiliation Lab of Ornithology, Cornell University, Ithaca, New York, United States of America

Friederike Woog

Affiliation Staatliches Museum für Naturkunde Stuttgart, Stuttgart, Germany

Wolfgang Fiedler

fiedler@orn.mpg.de

Affiliation Max-Planck-Institute for Ornithology, Department of Migration and Immuno-ecology, Radolfzell, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: VS WF WMH FW KHS. Performed the experiments: KHS VS. Analyzed the data: VS WMH. Contributed reagents/materials/analysis tools: KHS FW. Wrote the paper: VS WMH WF FW KHS.