1. Institute of Wildlife Biology and Game Management, Department of Integrative Biology and Biodiversity Research, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Str. 33, 1180 Vienna, Austria
2. Federal Research and Training Centre for Forests, Natural Hazards and Landscape (BFW), Department Forest Biodiversity & Nature Conservation, Seckendorff-Gudent-Weg 8, 1131 Vienna, Austria
3. Research Institute of Wildlife Ecology, Department of Interdisciplinary Life Sciences, University of Veterinary Medicine Vienna, Savoyenstraße 1, 1160 Vienna, Austria