Nolsoy (Nólsoy). 31/05/12; Faroe Islands; 2,197 ha; 62º00'33"N 006º40'07"W. Important Bird Area. Grassy and stony slopes as well as the surrounding sea area provide breeding and feeding habitat for one of the world's largest concentrations of European Storm-petrel Hydrobates pelagicus, with 50,000 pairs. The extensive sea cliffs also host important breeding populations of Atlantic Puffin Fratercula arctica, with 30,000 pairs, Black-legged Kittiwake Rissa tridactyla, Northern Fulmar Fulmarus glacialis and Black Guillemot Cepphus grylle. The Arctic Tern Sterna paradisaea also breeds here. The breeding success of several seabird species is highly variable and declines in bird numbers have been observed recently. Human uses include agriculture, sheep pastures, ornithological research and fishing. Traditional hunting of Northern Fulmar and Atlantic Puffin is still practiced in the site. The island is easily reachable by ferry and guided tourist tours are offered. Potential factors of threat include the possible introduction of rats to the island; bird hunting, tourism-related disturbance of bird colonies as well as climate related ecological changes. The non-native European frog Rana temporaria has recently been introduced to the island. Ramsar Site no. 2052. Most recent RIS information: 2012.