Douglas fir Douglas-fir forest is the primary habitat of the red tree vole ("Arborimus longicaudus") and the spotted owl ("Strix occidentalis"). Home range requirements for breeding pairs of spotted owls are at least 400 ha () of old growth. Red tree voles may also be found in immature forests if Douglas-fir is a significant component. The red vole nests almost exclusively in the foliage of the trees, typically above the ground, and its diet consists chiefly of Douglas-fir needles. A parasitic plant sometimes utilizing "P. menziesii" is Douglas-fir dwarf mistletoe ("Arceuthobium douglasii"). The leaves are also used by the woolly conifer aphid
Henry Bloom Noble a nurse residence, cost Noble over £10,000 (£1,250,000 as of 2018) not including the land. The original Noble's Hospital was replaced by a newer and much larger hospital, situated on land owened by Noble and which was located on what became the Westmorland Road, Douglas (named after the county of his birth), which opened in 1913. It was superseded by the present Noble’s Hospital which opened in July 2003. Purchased in 1909 with money from the Noble Trust, Noble's Park and Recreation Grounds provide the major recreational grounds in Douglas. The first sustained, powered and controlled flight on the Isle