Greater White-fronted Goose vs King Eider
Anser albifrons 比較対象 Somateria spectabilis
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | King Eider |
|---|---|---|
| 学名 | Anser albifrons | Somateria spectabilis |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 81.6 cm (32.1 in) | 53.3 cm (21.0 in) |
| 体重 | 2471.0 g (87.16 oz) | 1507.5 g (53.18 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Dives for sea urchins, molluscs, and crustaceans in Arctic coastal waters. Shifts to freshwater invertebrates … |
| 一腹卵数 | 3-9 | 1-16 |
| Population Trend | — | — |
Habitat Comparison
Greater White-fronted Goose
Breeds on Arctic and subarctic tundra and peatlands. Winters on estuaries, agricultural fields, freshwater marshes, and flooded meadows across Europe, Asia, and North America. One of the most widespread geese.
Song & Call Comparison
Greater White-fronted Goose
A loud, laughing 'kow-lyuk' or musical 'wah-wah'. Gives a distinctive high-pitched yodeling quality lacking in Greylag. Highly vocal in large winter flocks.
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
Greater White-fronted Goose
Breeds in the potholes region of the northern Great Plains; winters in the southern United States and along the Gulf Coast.
King Eider
Circumpolar High Arctic breeder in North America, Greenland, Svalbard, and Russia. Winters at sea in the North Atlantic and Bering Sea.
保全状況
Greater White-fronted Goose
King Eider
How to Tell Them Apart
Greater White-fronted Goose
Brown-gray body with white forehead patch bordered by white band at bill base. Underparts with bold irregular black bars on belly. Orange bill; orange-yellow legs. Juveniles lack white front and …
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
Greater White-fronted Goose
北極圏で繁殖し、温帯で越冬する大型のガン（体長64〜81cm）。成鳥は白い額と黒い腹部の横縞が特徴。Anser albifrons（マガン）は東アジア、ヨーロッパ、北米の広大な農地や湿地で越冬する。日本では宮城県伊豆沼などが重要な越冬地で、数万羽が集まる壮観な光景が見られる。Anatidae科。
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.