Rum is a large island located south-west of Skye in the Lochaber district of the Scottish Highlands. It has a varied topography and geology, with contrasting acid and basic rocks, leading to a variety of habitats. These include montane grassland, dwarf-shrub heath, blanket mire, open waters, shingle and boulder beaches, maritime cliffs, grassland and heath, and limited woodland, sand dunes and saltmarsh. Rum is particularly noted for its huge colony of Manx Shearwater Puffinus puffinus – the largest colony of this species in the world – breeding on the slopes of some of the higher hills. It also supports Golden Eagle Aquila chrysaetos, as well as a number of other breeding seabirds (auks and gulls) on the cliffs. The seabirds feed outside the SPA in nearby waters, as well as more distantly.