Black Swan vs King Eider
Cygnus atratus so với Somateria spectabilis
Side-by-Side Comparison
| Thuộc Tính | Black Swan | King Eider |
|---|---|---|
| Tên Khoa Học | Cygnus atratus | Somateria spectabilis |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | 130,0 cm (51.2 in) | — |
| Chiều Dài Sải Cánh | 190,0 cm (74.8 in) | 53,3 cm (21.0 in) |
| Khối Lượng | 6200,0 g (218.70 oz) | 1507,5 g (53.18 oz) |
| Chế Độ Ăn | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for sea urchins, molluscs, and crustaceans in Arctic coastal waters. Shifts to freshwater invertebrates … |
| Số Trứng | 4-6 | 1-16 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Black Swan
Gives a musical bugling 'boo-boo-boo' in flight and softer honking on water. Less vocal than Mute Swan; produces a baying call when alarmed. Wings whistle softly in flight.
King Eider
Male produces a melodious, ascending ooo-wuh cooing; female gives a guttural grunt. The male's haunting, dove-like call is one of the most atmospheric sounds of the High Arctic in spring.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
King Eider
Circumpolar High Arctic breeder in North America, Greenland, Svalbard, and Russia. Winters at sea in the North Atlantic and Bering Sea.
Tình Trạng Bảo Tồn
Black Swan
King Eider
How to Tell Them Apart
Black Swan
Almost entirely black with white flight feathers visible in flight. Red bill with a white band near the tip. Dark red to reddish-brown iris.
Bright red bill with a pale tip and prominent white band
King Eider
Male has bluish-grey crown, pale greenish cheeks, vivid orange-red frontal shield, black back and wings, and white breast patch. Female is warm rufous-brown with dark crescentic barring throughout.
About These Birds
Black Swan
The black swan was once considered impossible by Europeans who believed all swans were white, making it a famous philosophical example of inductive reasoning failure. It is the state emblem of Western Australia. Black swans form lifelong pair bonds and both parents share in incubation and care of cygnets.
King Eider
A large sea duck (~1.5 kg) of the family Anatidae, males adorned with an ornate orange frontal shield and vivid plumage. Inhabits Arctic coasts and tundra, migrating to subarctic seas in winter. Dives up to 25 m to forage on mussels, clams, and sea urchins. Least Concern; circumpolar breeding population remains stable.