The "Vogelkojen", or duck decoy structures, were used to catch waterfowl. Following in the footsteps of the Dutch, artificial lakes were created on the island of Föhr in the 18th century. A person who manned these lakes would use duck decoys to attract ducks. They were then lured into fenced-in, hose-like water channels where they were captured and slain. In good years, up to 67,000 ducks were caught using this method in Oevenum alone. The salted meat was exported in barrels as a delicacy. Six of these duck decoy structures still exist and can be visited today. A little excursion to the duck decoy structure in Boldixum is especially rewarding.