1. Behavioural Genomics, Max Planck Institute for Evolutionary Biology, Plön, Germany
2. Research Unit of Biodiversity (UO-CSIC-PA), Oviedo University, Mieres, Spain
3. Department of Biodiversity, Ecology and Evolution, Complutense University of Madrid, Madrid, Spain
4. Wildlife Ecology and Management, University Freiburg, Freiburg, Germany