There are undisturbed cliff areas, some fragments of maritime heath, maritime grassland, some freshwater marsh and large tracts of bracken. A collection of abandoned central fields surrounds a large ruined farmstead which dates from the 19th century. The vegetation is considerably modified by rabbit grazing, by the burrowing activities of both rabbits and seabirds (Manx Shearwater and Puffin) and in some areas by the trampling and manuring of gulls, which breed in large colonies.