1. Department of Environmental Sciences and Policy, University of Milan, Milan, Italy
2. Department of Earth and Environmental Sciences, University of Milan—Bicocca, Milan, Italy
3. Area Avifauna Migratrice, Istituto Superiore per La Protezione e La Ricerca Ambientale (ISPRA), Ozzano Emilia, (BO), Italy
4. IRSA-CNR, Water Research Institute-National Research Council of Italy, Brugherio, Italy