Great Horned Owl vs Great Grey Owl

Bubo virginianus compared with Strix nebulosa

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Side-by-Side Comparison

Attribute Great Horned Owl Great Grey Owl
Scientific Name Bubo virginianus Strix nebulosa
Order Strigiformes Strigiformes
Family Strigidae Strigidae
Conservation Status Least Concern Least Concern
Length 55.0 cm (21.7 in)
Wingspan 127.0 cm (50.0 in) 87.2 cm (34.3 in)
Weight 1400.0 g (49.38 oz) 1150.0 g (40.57 oz)
Diet Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … --
Clutch Size 1-4 2-9
Population Trend
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Size Comparison

Body Length
Great Horned Owl 55.0 cm
Great Grey Owl
Wingspan
Great Horned Owl 127.0 cm
Great Grey Owl 87.2 cm
Weight
Great Horned Owl 1400.0 g
Great Grey Owl 1150.0 g
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Habitat Comparison

Shared Habitats

Great Horned Owl only

Great Grey Owl only

Great Horned Owl

Diverse habitats including forests, deserts, swamps, urban parks, and suburban areas. Nests in tree hollows, cliff ledges, and abandoned nests of other large birds.

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Song & Call Comparison

Great Horned Owl

Song

Deep, resonant 'who-who-who-who-ooo': the classic 'hoo-h'HOO-hoo-hoo' territorial duet of a mated pair. Booms at dusk. Female pitch slightly higher than male.

Great Grey Owl

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Geographic Range & Migration

Great Horned Owl

North and South America from subarctic Canada to Tierra del Fuego. One of the most widespread owls in the Americas.

Great Grey Owl

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Conservation Status

Least Concern

Great Horned Owl

Least Concern

Great Grey Owl

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How to Tell Them Apart

Great Horned Owl

Plumage

Mottled grey-brown plumage with heavy dark barring. Prominent ear tufts, yellow eyes, and a white throat patch give a fierce expression.

Bill

Dark grey-black hooked bill almost hidden by facial disc feathers

Great Grey Owl

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About These Birds

Great Horned Owl

The great horned owl is the most powerful and widespread owl in the Americas, earning the nickname tiger of the sky. It is one of the earliest nesting birds, often laying eggs in January when snow still covers the ground. Great horned owls are fierce predators, regularly taking prey up to three times their own weight.

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Related Comparisons

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