Bearded Screech-owl vs Snowy Owl
Megascops barbarus 比較対象 Bubo scandiacus
Side-by-Side Comparison
| 属性 | Bearded Screech-owl | Snowy Owl |
|---|---|---|
| 学名 | Megascops barbarus | Bubo scandiacus |
| 目 | Strigiformes | Strigiformes |
| 科 | Strigidae | Strigidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | 63.0 cm (24.8 in) |
| 翼開長 | 27.2 cm (10.7 in) | 145.0 cm (57.1 in) |
| 体重 | 67.25 g (2.37 oz) | 2100.0 g (74.08 oz) |
| 食性 | -- | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| 一腹卵数 | 4-5 | 3-14 |
| 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
Bearded Screech-owl
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.
Geographic Range & Migration
Bearded Screech-owl
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
保全状況
Bearded Screech-owl
Snowy Owl
How to Tell Them Apart
Bearded Screech-owl
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
About These Birds
Bearded Screech-owl
メキシコ南部とグアテマラの山地森林に生息するベアードスクリーチオウル。体長19〜21cm。褐色の羽毛と黄色い目が特徴的。夜行性で昆虫を主食とする。生息地が限定的。準絶滅危惧。
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.