Snowy Owl vs Tawny Owl
Bubo scandiacus 比較対象 Strix aluco
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 | — | — |
Size Comparison
Habitat Comparison
Snowy Owl
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
Song & Call Comparison
Snowy Owl
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
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
保全状況
Snowy Owl
Tawny Owl
How to Tell Them Apart
Snowy Owl
Adult males are almost entirely white. Females and immatures have dark brown barring and spotting. Yellow eyes and fully feathered feet.
Dark hooked bill mostly hidden by dense facial feathering
Tawny Owl
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。