The Small Isles are all important for their wildlife, with Rùm being designated as both a
national nature reserve and a
Special Area of Conservation (SAC). Rùm is home to one of the world's largest colonies of
Manx shearwater, and was the location for the first stage of the reintroduction of
white-tailed sea-eagles into Scotland, with 82 birds being released between 1975 and 1985. Rùm, and Canna and Sanday (jointly), are designated as
Special Protection Areas (SPA) due their birdlife, with all three islands hosting important breeding populations of
guillemots and
kittiwakes. The Canna and Sanday SPA is also designated due to its importance to breeding
Atlantic puffins and
shags, The seas surrounding all of the Small Isles have also been designated as a SAC due to their importance for
harbour porpoises. The islands and surrounding sea area together form the Small Isles
national scenic area, one of the forty such areas in Scotland, which are defined so as to identify areas of exceptional scenery and to ensure its protection from inappropriate development. The designated area covers in total, of which is on land and the remaining is marine (i.e. below
low tide level). ==Footnotes==