Kiel/Hamburg (ddp). Tens of thousands of migratory birds find less calm than usual these days with their rest on the way to the South on the German North Sea coast. Animal rights scare on namely regularly feathered guests prophylactic bird flu tests. Employees of the Schleswig-Holstein Wadden Sea National Park Office collect a the fresh feces of birds it then on pathogens and to examine, as a spokesman for the Ministry of environment said Tuesday on ddp request in Kiel. So far, there is still no doubt. In Schleswig-Holstein roosting birds come according to the Ministry from regions further north in the area between Northern Siberia and Iceland and not from the regions of Russia, where infected animals had been found. Interbreeding with endangered bird groups later successes in Africa. Therefore you must adapt again after a temporary all-clear after the flight of birds next spring to careful monitoring of birds and protective measures for the agricultural holdings, the Ministry spokesman said. So far, veterinarians in the northernmost state of that are employed to assist farmers, growers and poultry farmers in the accommodation by 2.4 million chickens as well as some 110 000 geese, ducks, turkeys and other birds. Decreed by urgent Ordinance accommodation in barns to be completed in the next few days. Then, the official veterinarian should control more. Meanwhile, the Hamburg authorities search hard for an alternative accommodation for the famous Alster swans in the Hanseatic City. Rather, the 120 large birds are to be released this year because of the risk of bird flu in the winter quarters. While they spend the colder months otherwise in an ice-free open Alster branch, the Swans have to accommodate now covered. The city therefore search for a large hall because the animals needed exercise, water, straw and forage, a spokeswoman said. That is not easy. There is therefore also with the Hagenbeck Zoo conversations.