This owl is not very common in Olympic National Park. They are declining because their home is loss by logging industries, forest fragmentation, a increase of barrel owls and more. These factors affect the owls many ways.
These owls thrive in old grown forests of northern California, and the Pacific Northwest of the US. They are nocturnal hunters and mainly consume flying squirrels, wood rats and other small rodents, along with birds, insects, and reptiles. Northern Spotted Owls are very protective over their territory and irritable with habitat disturbances. They like to be in old growth forests with tree canopies that are really high, areas that have large trees with broken tops and limbs, or big holes use to nest. The owls mate during February or March and usually they produce 2-3 eggs. The female incubates the eggs for 30 days. After the eggs hatch, she sits with her offspring's for 8 to 10 days. The baby owls fledge (to gain the feather birds need for flying) about 34-36 days after they hatch.