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Side-by-Side Comparison

属性	Snowy Owl	Tawny Owl
学名	Bubo scandiacus	Strix aluco
目	Strigiformes	Strigiformes
科	Strigidae	Strigidae
保全状況	Vulnerable	Least Concern
体長	63.0 cm (24.8 in)	—
翼開長	145.0 cm (57.1 in)	53.0 cm (20.9 in)
体重	2100.0 g (74.08 oz)	480.0 g (16.93 oz)
食性	Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. …	--
一腹卵数	3-14	2-9
Population Trend	—	—

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Size Comparison

Body Length

Snowy Owl 63.0 cm

Tawny Owl —

翼開長

Snowy Owl 145.0 cm

Tawny Owl 53.0 cm

体重

Snowy Owl 2100.0 g

Tawny Owl 480.0 g

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Habitat Comparison

共通生息地

None

Snowy Owl only

🌿 Wetland 🌾 Grassland 🏖️ Coastal

Tawny Owl only

🌲 Forest

Snowy Owl

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

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Song & Call Comparison

Snowy Owl

さえずり

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.

Tawny Owl

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Geographic Range & Migration

Snowy Owl

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

Tawny Owl

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保全状況

Vulnerable

Snowy Owl

Least Concern

Tawny Owl

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How to Tell Them Apart

Snowy Owl

羽毛

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

くちばし

Dark hooked bill mostly hidden by dense facial feathering

Tawny Owl

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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.

Tawny Owl

ヨーロッパ・アジアの広葉樹林に広く分布するフクロウ（体長37〜43cm）。赤褐色または灰色の体と大きな黒い目が特徴。Strix aluco（モリフクロウ）は「フゥーフゥー」という有名なホーホー鳴きをする代表的なフクロウで、木の洞に営巣し、ネズミなどを主食とする。ヨーロッパの森林で最も一般的なフクロウ。Strigidae科。

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Related Comparisons

Great Horned Owl vs Snowy Owl

same-family

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