This medium-sized owl is easily recognized by its conspicuous "ear" tufts, yellow eyes set in a round facial disk, size, and mottled plumage of black, brown, gray, buff, and white. Legs and toes are densely feathered. Females are larger and darker in coloration than males. It is strictly nocturnal and secretive during nesting.
The Long-eared owl is a fairly common breeder in open country east of the Cascades in wooded riparian areas and junipers. It is a common breeder on Boardman Bombing Range, Morrow County and widespread in Malheur County. It is a rare breeder in the foothills of the Willamette Valley, where fewer than five nesting records have been reported.