1. Biodiversity and Animal Conservation Lab, CTFC; Solsona Spain
2. Catalan Ornithological Inst., Natural History Museum of Barcelona; Barcelona Spain
3. CEMFOR-CTFC, InForest Joint Research Unit, CSIC-CTFC-CREAF, Solsona, Spain, and CREAF, Cerdanyola del Valles, Spain, and CSIC; Cerdanyola del Valles Spain
4. SIBOC; Barcelona Spain
5. Inst. de Ciències del Mar (ICM-CSIC); Barcelona Spain