The German Green Belt now links 160 natural parks, 150 flora-and-fauna areas, three UNESCO biosphere reservations and the Harz Mountains National Park.[192] It is home to a wide variety of species that are rare elsewhere in Germany, including the wild cat, black stork, otter and rare mosses and orchids. Most of Germany's red kites – more than half of the 25,000 that live in Europe – live along the former border.[191] The Bund Naturschutz, one of Germany's largest conservation groups, is campaigning to extend the area within the Green Belt designated as nature conservation zones.[193]