1 Department of Applied Biology, Miguel Hernández University, 03202 Elche, Spain.
2 Department of Ornithology, Aranzadi Sciences Society, 20014 Donostia-San Sebastián, Spain.
3 Department of Ecology, University of Alicante, 03690 Alicante, Spain.
4 Conservation Biology Research Group, Instituto de Investigaciones en Biodiversidad y Medioambiente (Consejo Nacional de Investigaciones Científicas y Técnicas (INIBIOMA-CONICET), Universidad Nacional del Comahue, 1250 Bariloche, Argentina.
5 Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, University of Helsinki, 00100 Helsinki, Finland.
6 FitzPatrick Institute of African Ornithology, Department of Science and Technology-National Research Foundation Centre of Excellence (DST-NRF), University of Cape Town, 7701 Cape Town, South Africa.
7 Institute for Game and Wildlife Researchc (IREC), Consejo Superior de Investigaciones Científicas-Universidad de Castilla-La Mancha (CSIC-UCLM), 13005 Ciudad Real, Spain.
8 Department of Biodiversity Conservation, Pyrenean Institute of Ecology, Consejo Superior de Investigaciones Científicas (CSIC), 22700 Jaca, Spain.
9 Department of Evolutionary Ecology, National Museum of Natural Sciences, Consejo Superior de Investigaciones Científicas (CSIC), 28006 Madrid, Spain.
10 Department of Conservation Biology, Estación Biológica de DoñanaConsejo Superior de Investigaciones Científicas (CSIC), 41092 Sevilla, Spain.
11 Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Sevilla, Spain.