Greater White-fronted Goose vs White-winged Duck
Anser albifrons 比較対象 Asarcornis scutulata
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | White-winged Duck |
|---|---|---|
| 学名 | Anser albifrons | Asarcornis scutulata |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Critically Endangered |
| 体長 | — | — |
| 翼開長 | 81.6 cm (32.1 in) | 68.3 cm (26.9 in) |
| 体重 | 2471.0 g (87.16 oz) | 2950.0 g (104.06 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Feeds on seeds, plant material, and aquatic invertebrates; dabbles in shallow water; diet varies widely … |
| 一腹卵数 | 3-9 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Greater White-fronted Goose only
White-winged Duck only
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.
White-winged Duck
Undisturbed lowland tropical forest near slow rivers, pools, and forest swamps at low elevations in northeastern India, Bangladesh, Myanmar, and Sumatra. Requires large trees with nest cavities near permanent water.
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.
White-winged Duck
Critically endangered; extremely rare in wild. Gives low guttural hissing calls and soft wing-beating sounds. Vocalizations in wild scarcely documented given its rarity.
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.
White-winged Duck
Breeds in northern Eurasia; winters in sub-Saharan Africa. A classic Palearctic–African migrant with a wide wintering range.
保全状況
Greater White-fronted Goose
White-winged Duck
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 …
White-winged Duck
Dark brown body with pale spotting on head and neck. Bold white wing patch visible in flight. Yellowish-orange bill; legs orange. Head pale buffish-white speckled brown. Critically endangered SE Asian …
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。
White-winged Duck
ホワイトウィングドウッドダックは東南アジアの熱帯雨林に生息する稀少なカモです。翼の白い斑が特徴的な大型のカモです。インド、バングラデシュ、東南アジアの深い熱帯雨林の河川や沼地に生息し、深刻な絶滅危惧種です。