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
General Noble (tree) General Noble (tree) The General Noble Tree was a Giant Sequoia tree formerly within the Converse Basin Grove, with its site located in Giant Sequoia National Monument of the Sierra Nevada, in Fresno County, California. The General Noble Tree was cut down in 1892 to create an exhibit for the 1893 World's Columbian Exposition held in Chicago. The General Noble Tree, with a ground perimeter of (measured on a slope), was the second largest tree in the Converse Basin Grove (after the Boole Tree) and it was the largest tree ever cut down. Although not among the very largest Giant