1 Research Unit of Biodiversity (UO/CSIC/PA), Oviedo University, Mieres, 33600, Spain. Grimsö Wildlife Research Station, Swedish University of Agricultural Sciences, 73091, Riddarhyttan, Sweden. [email protected].
2 Research Institute of Wildlife Ecology, University of Veterinary Medicine, Vienna, 1160, Vienna, Austria.
3 Norwegian Institute for Nature Research, Sluppen, 7485, Trondheim, Norway.
4 Department of Biology and Biotechnologies, University of Rome "La Sapienza," 00185, Roma, Italy.
5 Grimsö Wildlife Research Station, Swedish University of Agricultural Sciences, 73091, Riddarhyttan, Sweden.