1. Department of Computer Science IV, University of Bonn, Friedrich-Hirzebruch-Allee 8, 53115 Bonn, Germany
2. Department of National Park Monitoring and Animal Management, Bavarian Forest National Park, Freyunger Str. 2, 94481 Grafenau, Germany
3. Forest Zoology, Institute of Forest Botany and Forest Zoology, Technical University of Dresden, Pienner Str. 7, 01737 Tharandt, Germany
4. Wildlife Sciences, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Büsgenweg 3, 37077 Göttingen, Germany
5. Faculty of Environment and Natural Resources, University of Freiburg, Tennenbacher Straße 4, 79106 Freiburg im Breisgau, Germany
6. Institute of Forestry and Wildlife Management, Inland Norway University of Applied Science, NO-2480 Koppang, Norway