đại bàng đầu trắng vs Northern Fulmar
Haliaeetus leucocephalus so với Fulmarus glacialis
Side-by-Side Comparison
| Thuộc Tính | đại bàng đầu trắng | Northern Fulmar |
|---|---|---|
| Tên Khoa Học | Haliaeetus leucocephalus | Fulmarus glacialis |
| Bộ | Accipitriformes | Procellariiformes |
| Họ | Accipitridae | Procellariidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 79,0 cm (31.1 in) | 47,0 cm (18.5 in) |
| Chiều Dài Sải Cánh | 203,0 cm (79.9 in) | 107,0 cm (42.1 in) |
| Khối Lượng | 4300,0 g (151.68 oz) | 750,0 g (26.46 oz) |
| Chế Độ Ăn | Primarily fish, also waterfowl, small mammals, and carrion. Hunts by swooping down to snatch fish … | Fish, squid, crustaceans, offal from fishing vessels, and zooplankton. Feeds by surface-seizing and shallow plunge-diving. |
| Số Trứng | 1-4 | 1 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Môi Trường Sống Chung
Không
đại bàng đầu trắng only
Northern Fulmar 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.
Northern Fulmar
Open ocean and sea cliffs. Breeds on cliff ledges and grassy slopes on northern coastlines. Pelagic outside breeding season.
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.
Northern Fulmar
A nasal, cackling 'kak-kak-kak-kak' or grunting 'uh-uh-uh' at the nest and colony. Less melodic than petrels. In flight gives occasional single nasal calls.
Geographic Range & Migration
đại bàng đầu trắng
North America from Alaska and Canada through the contiguous United States to northern Mexico.
Northern Fulmar
North Atlantic and North Pacific oceans. Breeds from the Arctic south to Britain, France, and New England.
Tình Trạng Bảo Tồn
đại bàng đầu trắng
Northern Fulmar
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
Northern Fulmar
Light morph: white head and underparts with grey wings and back. Dark morph: entirely grey. Tube-nosed bill and stiff-winged flight distinctive at sea.
Yellowish hooked bill with prominent tubular nostrils on top
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.
Northern Fulmar
The northern fulmar is a long-lived seabird that can survive over 40 years. It defends its nest by projectile-vomiting a foul-smelling stomach oil at intruders, which can mat the feathers of predators and cause fatal loss of waterproofing. Fulmars have expanded their breeding range dramatically southward over the past two centuries.