Breeding bird data for 7 water birds (Bontbekplevier, Dwergstern, Grote stern, Kluut, Noordse Stern, Strandplevier, Visdief) in the Delta area, the Netherlands, in 1979 and 1987. The data were digitized by VLIZ from the original report: Baptist, H.J.M.; Colijn, F.; Marteijn, E.C.L.; Meininger, P.L.M.; Meire, P.M.; Twisk, F. (Ed.) (1988). Gevleugeld onderzoek: watervogels in veranderende watersystemen. University of Gent, Laboratory of oecology of animals, zoogeography en nature conservation: Gent. 22 pp.
