1. Department of Biology & CESAM – Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
2. Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências da Universidade de Lisboa, C2, Campo Grande, 1749-016 Lisboa, Portugal
3. Birds & Nature Tours, Lda., Monte dos Sapos, Vivenda S/N, 7750-387 Mértola, Portugal
4. Department of Chemical Enginering & CeFEMA-Center of Physics and Engineering of Advanced Materials, Instituto Superior Tecnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal