A very large barn-owl with a gray facial disk, gray crown, and rufous upperparts and wings with scattered dark markings. Prefers open country, like agricultural land, plantations, and forest edge, from lowlands to mountains. Limited to Sulawesi. Distinguished from smaller Minahassa Masked-Owl by gray face, gray forecrown, more extensive dark markings across wings and upperparts, and preference for open country. Distinguished from Australasian Grass-Owl by feathered legs that do not project beyond the tail in flight, and by less contrasting wing pattern. Call is a long screeching note.