Institution: | 1.Forest Biodiversity Research Network, Dept. of Forest Ecosystems and Society, Oregon State University, Corvallis, OR, 97331, USA ;2.Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland ;3.Division of Forest Sciences, School of Agricultural, Forest and Food Sciences HAFL, Bern University of Applied Sciences BFH, L?nggasse 85, 3052, Zollikofen, Switzerland ; |