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
Claud Lovat Fraser Theatre in Haymarket. Tree in turn, at MacFall’s instigation, commissioned him to supply the illustrations for "Thoughts and Afterthoughts", his volume of reminiscences and also gave him free run of his private suite in the theatre’s dome; Fraser began to get to know theatre people, and they him. However Tree subsequently declined, in January 1914, a proposed theatre piece "The Three Students" written by MacFall with designs by Fraser. In 1913, along with Holbrook Jackson and the poet Ralph Hodgson, Lovat Fraser established a small publishing firm called "The Sign of the Flying Fame" to produce decorative poetry broadsides and