About the Authors

Petra Quillfeldt

Petra.Quillfeldt@bio.uni-giessen.de

Affiliations Justus Liebig University Giessen, Department of Animal Ecology and Systematics, 35392, Giessen, Germany, Centre d’Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France

Yves Cherel

Affiliation Centre d’Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France

Juan F. Masello

Affiliation Justus Liebig University Giessen, Department of Animal Ecology and Systematics, 35392, Giessen, Germany

Karine Delord

Affiliation Centre d’Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France

Rona A. R. McGill

Affiliation Life Sciences Mass Spectrometry Facility, Scottish Universities Environmental Research Centre, East Kilbride, Glasgow, G75 0QF, United Kingdom

Robert W. Furness

Affiliation College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, United Kingdom

Yoshan Moodley

Affiliation Konrad Lorenz Institute for EthologyUniversity of Veterinary Medicine Vienna, A-1160, Wien, Austria

Henri Weimerskirch

Affiliation Centre d’Etudes Biologiques de Chizé, UMR 7372 CNRS-Université de La Rochelle, 79360, Villiers-en-Bois, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PQ YC JFM HW. Performed the experiments: PQ YC JFM HW RARM KD RWF YM. Analyzed the data: PQ YC JFM HW. Contributed reagents/materials/analysis tools: PQ YC JFM HW RARM KD RWF YM. Wrote the paper: PQ YC JFM HW RARM RWF YM. Database maintenance, co-ordination of field assistants: KD YC JFM HW.