About the Authors

Fränzi Korner-Nievergelt

Affiliations oikostat GmbH, Ettiswil, Switzerland, Swiss Ornithological Institute, Sempach, Switzerland

Robert Brinkmann

Affiliations Leibniz Universität Hannover, Institut für Umweltplanung, Hannover, Germany, Freiburg Institute of Applied Animal Ecology, Freiburg, Germany

Ivo Niermann

Affiliation Leibniz Universität Hannover, Institut für Umweltplanung, Hannover, Germany

Oliver Behr

obehr@biologie.uni-erlangen.de

Affiliation Friedrich-Alexander-Universität Erlangen-Nürnberg, Institut für Tierphysiologie, Erlangen, Germany

Competing Interests

Fränzi Korner-Nievergelt is employed by oikostat GmbH. This company carried out a part of the research in the project as a contractor but did not fund the project. The research has solely been funded by the Germany Ministry for environmental protection. There are, hence, no conflicts regarding employment, consultancy, patents, products in development or marketed products etc, neither does this alter our adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: FK OB RB IN. Performed the experiments: FK OB RB IN. Analyzed the data: FK OB IN. Contributed reagents/materials/analysis tools: FK OB IN. Wrote the paper: FK OB.