Giant Scops-owl vs Snowy Owl

Otus gurneyi compared with Bubo scandiacus

Side-by-Side Comparison

Attribute Giant Scops-owl Snowy Owl
Scientific Name Otus gurneyi Bubo scandiacus
Order Strigiformes Strigiformes
Family Strigidae Strigidae
Conservation Status Vulnerable Vulnerable
Length 63.0 cm (24.8 in)
Wingspan 48.1 cm (18.9 in) 145.0 cm (57.1 in)
Weight 370.0 g (13.05 oz) 2100.0 g (74.08 oz)
Diet -- Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. …
Clutch Size -- 3-14
Population Trend

Size Comparison

Body Length
Giant Scops-owl
Snowy Owl 63.0 cm
Wingspan
Giant Scops-owl 48.1 cm
Snowy Owl 145.0 cm
Weight
Giant Scops-owl 370.0 g
Snowy Owl 2100.0 g

Habitat Comparison

Shared Habitats

None

Giant Scops-owl only

Snowy Owl only

Snowy Owl

Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.

Song & Call Comparison

Giant Scops-owl

Snowy Owl

Song

Male gives a deep booming hoot 'hooooo' and a rising 'hoo-hoo' series. Also barks sharply when alarmed. Quieter than many owls; silent during long Arctic winter hunts.

Geographic Range & Migration

Giant Scops-owl

Snowy Owl

Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.

Conservation Status

Vulnerable

Giant Scops-owl

Vulnerable

Snowy Owl

How to Tell Them Apart

Giant Scops-owl

Snowy Owl

Plumage

Adult males are almost entirely white. Females and immatures have dark brown barring and spotting. Yellow eyes and fully feathered feet.

Bill

Dark hooked bill mostly hidden by dense facial feathering

About These Birds

Snowy Owl

The snowy owl is the heaviest North American owl and one of the most charismatic Arctic birds. Unlike most owls, it is largely diurnal, necessitated by the continuous daylight of Arctic summers. Snowy owl irruptions — periodic mass southward movements — are tied to lemming population cycles.

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