In England it is mainly found in the north – places such as the Lake District, Northumberland, County Durham, much of Yorkshire, the Pennines and the Peak District, as far south as the Staffordshire Moorlands. There is an isolated introduced population on Dartmoor, and overspill Welsh birds visit the Shropshire Hills such as Long Mynd, where they breed. The Exmoor population would now appear to be extinct, with the last birds sighted as recently as 2005. An introduced population in Suffolk died out by the early 20th century, though a population on Cannock Chase in Staffordshire lasted longer.