In Germany’s Halligen islands, a bird sanctuary faces rising sea levels

Three out of five bird species are in decline worldwide, and one in eight is threatened with extinction. In the Halligen islands of northern Germany, a sanctuary for migratory birds is under threat due to rising sea levels. These 10 small islands – listed as a Unesco World Natural Heritage Site – are home to hundreds of thousands of migratory birds travelling between Africa and the Arctic Circle, as well as many breeding birds.