Diverse habitat requirements. Associated with riparian habitats and deciduous trees. Pacific Coast, including Alaska, found in mixed forests of big-leaf maple, red alder, Douglas fir, western hemlock and western red cedar. Nest in tree cavities either excavated by Northern Flickers or woodpeckers, natural cavities, or nest boxes. Nests near water. In Yakutat, favors riparian Spruce (Cannings and Angell 2001).
Cannings, R. J. and T. Angell. 2001. Western Screech-owl. In: The Birds of North America, No. 597 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.