The great grey owl, Strix nebulosa, stands as the world's largest owl by length. This majestic bird is recognized by its large rounded head, grey face, and piercing yellow eyes encircled by darker plumage. Its underparts are a lighter shade adorned with dark streaks, while the upper parts boast a grey hue with pale bars. Notably lacking ear tufts, the great grey owl possesses the most expansive facial disc of any raptor, and a distinctive white collar, reminiscent of a "bow-tie," sits just below its beak. The species' long tail, tapering to a rounded end, contributes to its impressive size, which is somewhat exaggerated by its voluminous feathers.
Adult great grey owls can be identified by their lack of ear tufts and the largest facial disc among raptors. They exhibit a white "bow-tie" below the beak and a long, rounded tail. Males are typically smaller than females, a common trait among owl species. The great grey owl's call is a deep, rhythmic series of 'who's, primarily associated with territorial claims or communication with offspring.
The great grey owl favors the dense coniferous forests of the taiga for breeding, often near open spaces such as meadows or bogs. In some regions, like Oregon and California, they have adapted to nesting in mixed oak woodlands.
