The Swedish Board of Agriculture made the decision late Tuesday. Where keeping tame fowl indoors is not possible they should be kept under a roof of some sort to avoid contact with wild birds, and should not drink from the same water as migratory birds.
The German authorities confirmed Tuesday that the deadly H5N1 strain of bird flu has been found on the Baltic island of Rügen.
The authorities here are also closely monitoring the situation at the southwestern Swedish lake Hornborgasjön, where thousands of cranes return every spring for their annual mating dance. The cranes spend several days on the German island before flying on to Sweden, usually in mid-March.