1. Department of Environmental Science and Policy University of Milano Milan Italy
2. Department of Life Sciences University of Siena Siena Italy
3. NBFC National Biodiversity Future Center Palermo Italy
4. Istituto di Ricerca sulle Acque IRSA‐CNR Brugherio Italy
5. British Trust for Ornithology The Nunnery Thetford UK
6. Institute of Avian Research Wilhelmshaven Germany
7. Max‐Planck‐Institute of Animal Behavior Radolfzell Germany
8. Area Avifauna Migratrice Istituto Superiore per la Protezione e la Ricerca Ambientale (ISPRA) Ozzano dell'Emilia Italy