đại bàng đầu trắng vs Snowy Owl
Haliaeetus leucocephalus so với Bubo scandiacus
Side-by-Side Comparison
| Thuộc Tính | đại bàng đầu trắng | Snowy Owl |
|---|---|---|
| Tên Khoa Học | Haliaeetus leucocephalus | Bubo scandiacus |
| Bộ | Accipitriformes | Strigiformes |
| Họ | Accipitridae | Strigidae |
| Tình Trạng Bảo Tồn | Least Concern | Vulnerable |
| Chiều Dài | 79,0 cm (31.1 in) | 63,0 cm (24.8 in) |
| Chiều Dài Sải Cánh | 203,0 cm (79.9 in) | 145,0 cm (57.1 in) |
| Khối Lượng | 4300,0 g (151.68 oz) | 2100,0 g (74.08 oz) |
| Chế Độ Ăn | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Primarily lemmings on the breeding grounds, where a pair may consume over 1,500 per year. … |
| Số Trứng | 1-4 | 3-14 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
đại bàng đầu trắng only
Snowy Owl only
Không
đại bàng đầu trắng
Large bodies of open water including coasts, rivers, and lakes with abundant fish and old-growth trees for nesting.
Snowy Owl
Arctic tundra for breeding. Winters in open habitats resembling tundra, including prairies, airports, shorelines, and agricultural fields.
Song & Call Comparison
đại bàng đầu trắng
High-pitched, chattering whistle: a rapid 'kleek-kik-ik-ik-ik'. Surprisingly weak and thin for such a large raptor. Also gives a lower 'kwit-kwit' call near the nest.
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
đại bàng đầu trắng
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Snowy Owl
Circumpolar Arctic for breeding. Irruptive winter movements bring birds south to the northern United States, Europe, and Asia.
Tình Trạng Bảo Tồn
đại bàng đầu trắng
Snowy Owl
How to Tell Them Apart
đại bàng đầu trắng
Adults have a dark brown body with a striking white head and tail. Juveniles are mottled brown and white, reaching full adult plumage at age five.
Large, hooked, bright yellow bill
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
đại bàng đầu trắng
The bald eagle is the national bird and symbol of the United States. Once endangered due to DDT pesticide use, it made a remarkable recovery and was removed from the endangered species list in 2007. These powerful raptors build the largest tree nests of any bird, some weighing over two tons.
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.