About the Authors
Konrad Lorenz Forschungsstelle, Core Facility University of Vienna, Gruenau, Austria
Department of Behavioural Biology, University of Vienna, Vienna, Austria
Department of Cognitive Biology, University of Vienna, Vienna, Austria
The authors hereby declare that funding received by a commercial source (L′Oreal) does not alter their adherence to all the PLOS ONE policies on sharing data and materials.
Conceived and designed the experiments: CAFW TB. Performed the experiments: CAFW. Analyzed the data: CAFW. Wrote the paper: CAFW TB.