In 1978 the Wedel Marsh was diked – despite mass protests led by conservationists. The NABU branch in Hamburg did, however, ensure that the extraction site of marine clay needed to build the dams was turned into a substitute habitat for wading and aquatic birds. Working according to guidance and active support of many bird enthusiasts, a 10-hectare body of water was created on an area measuring roughly 17.5 ha. Ever since, the area has been rented by NABU Hamburg and is maintained and further developed by dedicated volunteers on an ongoing basis.
The Carl Zeiss Bird Station was opened in 1984. For more than 30 years, this area, which lies some 15 km to the west of Hamburg, has been used to observe the birds on the Wedel Marsh. This is the perfect place for ducks, geese, wading birds and gulls to find food and to breed.
One full-time and several volunteer supervisors tell visitors all about the local nature, offer them binoculars for hire and inspire people on tours that take in the local bird species.