"Those data are part of work to collect data about the status of coastal migratory flyway populations of the East Atlantic Flyway (van Roomen et al. 2013) and of partial migratory or resident waterbird populations using the same sites at this flyway. It is organized by the Wadden Sea Flyway Initiative, Wetlands International and BirdLife International in cooperation with national authorities, organisations and institutions responsible for waterbird and wetland monitoring. Besides national investments of the monitoring partners, it was funded by the Dutch Ministry of Economic Affairs through Programme Rich Wadden Sea, the organisation MAVA through BirdLife International and Wetlands International, The World Wide Fund for Nature in The Netherlands, The National Park Wadden Sea Schleswig-Holstein through the Common Wadden Sea Secretariat, The National Park Wadden Sea Niedersachsen, Vogelbescherming The Netherlands and the WeBS partnership from the UK."