Affiliation: | 1. CTFC (Forest Science Center of Catalonia), , Solsona, Catalonia, Spain;2. CREAF (Centre for Ecological Research and Applied Forestries), Autonomous University of Barcelona, , Bellaterra, Catalonia, Spain;3. Institut Català d'Ornitologia (ICO), Museu de Zoologia, , 08003 Barcelona, Catalonia, Spain;4. Department of Ecology & Evolutionary Biology, University of Toronto, , Toronto, ON, M5S 3G5 Canada |