About the Authors

Jean-Baptiste Thiebot

jbthiebot@yahoo.fr

Current address: National Institute of Polar Research, Tachikawa, Tokyo, Japan

Affiliation Centre d’Études Biologiques de Chizé, Unité Propre de Recherche 1934 du Centre National de la Recherche Scientifique, Villiers-en-bois, France

Yves Cherel

Affiliation Centre d’Études Biologiques de Chizé, Unité Propre de Recherche 1934 du Centre National de la Recherche Scientifique, Villiers-en-bois, France

Robert J. M. Crawford

Affiliations Branch Oceans and Coasts, Department of Environmental Affairs, Cape Town, South Africa, University of Cape Town, Animal Demography Unit, Rondebosch, South Africa

Azwianewi B. Makhado

Affiliations Branch Oceans and Coasts, Department of Environmental Affairs, Cape Town, South Africa, University of Cape Town, Animal Demography Unit, Rondebosch, South Africa

Philip N. Trathan

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Cambridge, United Kingdom

David Pinaud

Affiliation Centre d’Études Biologiques de Chizé, Unité Propre de Recherche 1934 du Centre National de la Recherche Scientifique, Villiers-en-bois, France

Charles-André Bost

Affiliation Centre d’Études Biologiques de Chizé, Unité Propre de Recherche 1934 du Centre National de la Recherche Scientifique, Villiers-en-bois, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CAB YC RJMC ABM. Performed the experiments: CAB JBT RJMC ABM. Analyzed the data: JBT. Contributed reagents/materials/analysis tools: CAB RJMC PNT DP. Wrote the paper: JBT YC.