1. Department of Biology University of Turku Turku Finland
2. International Institute for Applied Systems Analysis (IIASA) Laxenburg Austria
3. Cornell Lab of Ornithology Cornell University Ithaca New York USA
4. Department of Terrestrial Ecology Norwegian Institute for Nature Research (NINA) Trondheim Norway
5. The Finnish Museum of Natural History University of Helsinki Helsinki Finland
6. Department of Ecology Swedish University of Agricultural Sciences Uppsala Sweden
7. DOPPS – BirdLife Slovenia Ljubljana Slovenia
8. Department of Bioscience Aarhus University Rønde Denmark
9. Research Institute for Nature and Forest Brussel Belgium
10. Romanian Ornithological Society Bucharest Romania
11. Instituto da Conservação da Natureza e das Florestas, IP (ICNF) Centro de Estudos de Migrações e Proteção de Aves (CEMPA) Lisbon Portugal
12. Institute of Wildlife Management and Vertebrate Zoology University of Sopron Sopron Hungary
13. I‐WeBS Office, BirdWatch Ireland Wicklow Ireland
14. British Trust for Ornithology Thetford UK
15. LPO‐BirdLife France, Fonderies Royales Rochefort France
16. Department of Biology Lund University Lund Sweden
17. Sovon Dutch Centre for Field Ornithology Nijmegen The Netherlands
18. Wetlands International Ede The Netherlands
19. BirdLife Cyprus Nicosia Cyprus
20. Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences Tartu Estonia
21. Department of Vertebrate Ecology and Zoology, Faculty of Biology University of Gdańsk Gdańsk Poland
22. Croatian Society for Bird and Nature Protection Zagreb Croatia
23. Sociedad Española de Ornitología (SEO/BirdLife) Madrid Spain
24. Faculty of Environmental Sciences Czech University of Life Sciences Prague Prague Czech Republic
25. Département Études Aves‐Natagora Namur Belgium
26. Conservation Department Bulgarian Society for the Protection of Birds Sofia Bulgaria
27. Hellenic Ornithological Society Athens Greece
28. SOS/BirdLife Slovakia Bratislava Slovakia
29. Lithuanian Ornithological Society Vilnius Lithuania
30. Institute of Biology University of Latvia Salaspils Latvia
31. BirdLife Österreich Vienna Austria
32. Dachverband Deutscher Avifaunisten e.V. (DDA) Federation of German Avifaunists Münster Germany
33. Istituto Superiore per la Protezione e la Ricerca Ambientale (ISPRA) Ozzano dell'Emilia Italy