Bass Rock in the Firth of Forth, home to the world's largest colony of northern gannets, has been bought by the conservation charity RSPB Scotland. The island, three miles off the coast of North Berwick, has been owned by the Hamilton-Dalrymple family for 320 years. A grant of £586,000 from the National Heritage Memorial Fund has helped pay for transfer of the rock's ownership along with neighbouring Craigleith Island, which is home to about 10,000 puffins.