About the Authors

Małgorzata Pilot

Affiliations School of Biological and Biomedical Sciences, Durham University, Durham, United Kingdom, Museum and Institute of Zoology, Polish Academy of Sciences, Warszawa, Poland

Włodzimierz Jędrzejewski

Affiliations Mammal Research Institute, Polish Academy of Sciences, Białowieża, Poland, Instituto Venezolano de Investigaciones Cientificas (IVIC), Centro de Ecologia, Caracas, Venezuela

Vadim E. Sidorovich

Affiliation Institute of Zoology, National Academy of Sciences of Belarus, Minsk, Belarus

Wolfram Meier-Augenstein

Affiliation Stable Isotope Laboratory, James Hutton Institute, Invergowrie, Dundee, United Kingdom

A. Rus Hoelzel

a.r.hoelzel@durham.ac.uk

Affiliation School of Biological and Biomedical Sciences, Durham University, Durham, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MP ARH. Performed the experiments: MP WM-A. Analyzed the data: MP WM-A. Contributed reagents/materials/analysis tools: WJ VES. Wrote the paper: MP WJ VES WM-A ARH.