Bermuda Saw-whet Owl vs Snowy Owl
Aegolius gradyi 비교 대상 Bubo scandiacus
Side-by-Side Comparison
| 속성 | Bermuda Saw-whet Owl | Snowy Owl |
|---|---|---|
| 학명 | Aegolius gradyi | Bubo scandiacus |
| 목 | Strigiformes | Strigiformes |
| 과 | Strigidae | Strigidae |
| 보전 상태 | Extinct | Vulnerable |
| 체장 | — | 63.0 cm (24.8 in) |
| 날개 폭 | — | 145.0 cm (57.1 in) |
| 체중 | — | 2100.0 g (74.08 oz) |
| 식성 | -- | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| 산란 수 | -- | 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
Bermuda Saw-whet 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
Bermuda Saw-whet Owl
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
보전 상태
Bermuda Saw-whet Owl
Snowy Owl
How to Tell Them Apart
Bermuda Saw-whet 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
Bermuda Saw-whet Owl
버뮤다올빼미는 17세기에 멸종한 버뮤다 고유의 작은 올빼미였다. 고양이, 쥐, 돼지와 같은 유럽 정착민이 들여온 외래 포유류가 도입되면서 멸종한 것으로 추정된다.
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.