tree hollows and cracks. Depending on the biodiversity of the flora, many insect species live on Streckelsberg. In addition to various butterflies there are also beetles, including the capricorn beetle, sawyer and longhorn beetle, whose larvae live on dead wood. Waterfowl From the walking trail on the top of the cliffs on the Streckelsberg a wide variety of water birds may be seen including: Mallard, black-headed gull, common gull, herring gull, great black-backed gull, great crested grebe, coot, cormorant and mute swan. Regular migrants from their breeding grounds north of Usedom that may be seen in shallow water are the tufted duck, scaup, eider duck, goldeneye, long-tailed duck, red-breasted merganser and common merganser. Nature conservation On 12 December 1957 Streckelsberg was designated as a nature reserve, which today is the Usedom Island Nature Park. The state of the terrain is classified as satisfactory, because parts of it are used for forestry Koserow Observation Tower The Koserow Observation Tower was a Wehrmacht observation tower on the Streckelsberg built in the late 1930s for observers of air raids (e.g., on the ports of Swinemünde and Szczecin). The tower's observation deck later had a cinetheodolite for the optical tracking of missile tests from Peenemünde-West (e.g., V-1 flying bomb) and the Peenemünde Army Research Center (V-2 rocket). References Sources Umweltministerium Mecklenburg-Vorpommern (publ.): Streckelsberg 260. In: Die Naturschutzgebiete in Mecklenburg-Vorpommern. Demmler-Verlag, Schwerin 2003, pp. 166 f. External links Environmental card portal M-V mit geodata (boundary of the nature reserve, biotope map) Der Streckelsberg auf Usedom at ww.streckelsberg.de. Naturpark Usedom - Naturschutzgebiet Streckelberg at www.insel-usedom.net. Comprehensive photograph collection of the nature reserve Streckelsberg nature reserve - rare orchids and panoramic views Usedom Hills of Mecklenburg-Western Pomerania Nature reserves in Mecklenburg-Western Pomerania World War II sites of Nazi Germany