Great Horned Owl vs Christmas Island Boobook

Bubo virginianus compared with Ninox natalis

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Side-by-Side Comparison

Attribute Great Horned Owl Christmas Island Boobook
Scientific Name Bubo virginianus Ninox natalis
Order Strigiformes Strigiformes
Family Strigidae Strigidae
Conservation Status Least Concern Vulnerable
Length 55.0 cm (21.7 in)
Wingspan 127.0 cm (50.0 in) 38.0 cm (15.0 in)
Weight 1400.0 g (49.38 oz) 172.5 g (6.08 oz)
Diet Extremely diverse — mammals (rabbits, skunks, rodents), birds (including other raptors), reptiles, amphibians, and fish. … --
Clutch Size 1-4 2
Population Trend
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Size Comparison

Body Length
Great Horned Owl 55.0 cm
Christmas Island Boobook
Wingspan
Great Horned Owl 127.0 cm
Christmas Island Boobook 38.0 cm
Weight
Great Horned Owl 1400.0 g
Christmas Island Boobook 172.5 g
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Habitat Comparison

Shared Habitats

Great Horned Owl only

Christmas Island Boobook only

None

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.

Christmas Island Boobook

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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.

Christmas Island Boobook

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Conservation Status

Least Concern

Great Horned Owl

Vulnerable

Christmas Island Boobook

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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

Christmas Island Boobook

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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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