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
Bicycle tree As of February 2013, some 85 systems of this manufacturer and type in use can hold 17,323 bicycles, all in Japan. Bicycle tree A bicycle tree or "cycle tree" or "bike tree" is a bicycle parking system that resembles a tree in shape. There are a few types that have been developed. Some are manual, some use mechanical means to move the bike, assisting the bike by raising into a particular spot, they can handle between 5-20 bicycles depending on size. They are made by various companies in Europe and North America. Still others, like the one made by JFE