Snowy Owl

The Snowy Owl is one of the most recognizable and striking owls in the world. An iconic symbol of the high Arctic, this large, white raptor is uniquely adapted to survive some of the harshest climates on Earth. Unlike most other owls, which are strictly nocturnal, the Snowy Owl is active during both day and night—an essential adaptation for living in the land of the midnight sun during the Arctic breeding season.

With its thick, insulating plumage, feathered feet, and imposing physical presence, this bird is a formidable apex predator. While they are year-round residents in the far north, they occasionally captivate birdwatchers across North America and Eurasia during winter "irruptions," when large numbers travel south into temperate latitudes, appearing unpredictably in open landscapes.

Identifying a Snowy Owl is relatively straightforward due to its massive size and largely white coloration, but distinguishing age and sex requires closer inspection.

Key Field Marks

• Plumage: Pure white to heavily barred. Adult males are the whitest, occasionally becoming almost completely pristine white as they age. Females and immature birds display dense, dark brown horizontal barring across their bodies, wings, and head.
• Head: Large and rounded with no visible ear tufts. Face is pale white, accentuated by striking, bright yellow eyes and a sharp, black bill.
• Shape & Profile: A bulky, barrel-chested silhouette. When perched on the ground, they can look like a large white plastic bucket or a patch of melting snow from a distance.
• Feet: Thickly covered in dense, white feathers that resemble snowshoes, protecting them from extreme arctic temperatures.

Similar Species

• Barn Owl: Much smaller, with a distinct heart-shaped facial chest, warm buff-colored back, and dark eyes.
• Great Horned Owl (pale morphs): Subarctic variations of the Great Horned Owl can be very pale, but always feature prominent ear tufts and distinct facial discs.
• Gyrfalcon: A large arctic raptor that can be white, but has pointed wings, a longer tail, and a different facial structure without the flat owl disc.

Based in the circumpolar north, the Snowy Owl occupies distinct environments depending on the season:

• Breeding Range: Treeless, rolling Arctic tundra. They select high points such as hummocks, ridges, or rocky outcrops to scrape out nests, enabling 360-degree views of their nesting territory.
• Winter Range & Irruptions: In most winters, they stay in the Arctic or southern Canada, but periodically they head much further south. During these irruptions, they seek flat, wide-open spaces that mimic their tundra home. Standard winter habitats include agricultural fields, coastal dunes, Great Lakes shorelines, and airport runways.
• Global Distribution: Native to the Arctic tundras of Alaska, Northern Canada, Greenland, Scandinavia, and Siberia.

Foraging and Diet

The Snowy Owl is a sit-and-wait predator, spending hours scanned for movement from a low perch such as a dune, fence post, or utility pole. Their diet is heavily dependent on lemmings; a single adult owl can consume more than 1,600 lemmings a year. When lemmings are scarce, they diversify their diet, hunting shorebirds, ducks, ptarmigan, hares, and fish.

Vocalization

Snowy Owls are generally silent outside of the breeding season. On their breeding grounds, males issue a deep, booming, double hoot (krow-w-w or gah-w-w) that can carry for miles over the flat tundra. When defending their nest, both sexes produce harsh, loud cackles (krek-krek) and bill snaps.

Nesting

Nest sites are chosen on sweeping, dry tundra ridges. The female scrapes a shallow depression in the bare ground. She is the sole incubator of the eggs, while the male vigorously defends the territory and provides her and the chicks with a steady supply of prey.