1. Finnish Museum of Natural History; University of Helsinki; P.O. Box 17; Helsinki; FI-00014; Finland
2. Evolution, Ecology & Genetics; Research School of Biology; ANU College of Medicine, Biology & Environment; The Australian National University; Canberra; ACT; 0200; Australia
3. ARONIA Coastal Zone Research Team; Åbo Akademi University and Novia University of Applied Sciences; Raseborgsvägen 9; Ekenäs; FI-10600; Finland
4. Department of Bioscience; Aarhus University; Kalø, Grenåvej 14; Rønde; DK-8410; Denmark
5. BirdWatch Ireland; Unit 20 Block D Bullford Business Campus; Kilcoole; County Wicklow; Ireland
6. LPO-BirdLife France; Fonderies Royales; 8 rue du Dr Pujos; Rochefort Cedex; BP 90263 F-17305; France
7. Wildfowl & Wetlands Trust (WWT); Slimbridge; Glos; GL2 7BT; UK
8. British Trust for Ornithology; The Nunnery; Thetford; Norfolk; IP24 2PU; UK
9. Sovon Dutch Centre for Field Ornithology; P.O. Box 6521; Nijmegen; 6503 GA; The Netherlands
10. Swiss Ornithological Institute; Sempach; CH-6204; Switzerland
11. Department of Biology; University of Lund; Ecology Building; Lund; S-223 62; Sweden
12. Wetlands International; Horapark 9; Ede; 6717 LZ; The Netherlands
13. Quercus; School of Biological Sciences; Queen's University Belfast; MBC, 97 Lisburn Road; Belfast; Northern Ireland; BT9 7BL; UK
14. Dachverband Deutscher Avifaunisten e.V. (DDA); Federation of German Avifaunists; An den Speichern 6; Münster; D-48157; Germany