1. Norwegian Institute for Nature Research, PO Box 5685, Sluppen, NO‐7485 Trondheim, Norway
2. Department of Ecology, Grimsö Wildlife Research Station, Swedish University of Agricultural Science, SE‐730 91 Riddarhyttan, Sweden
3. Department of Ecology and Nature Resource Management, Norwegian University of Life Sciences, PO Box 10 5003, NO‐1432 Ås, Norway
4. Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE‐901 83 Umeå, Sweden
5. Faculty of Applied Ecology and Agricultural Sciences, Hedmark University College, Evenstad, NO‐2480 Koppang, Norway