Greater White-fronted Goose vs Greylag Goose
Anser albifrons 比較対象 Anser anser
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Greylag Goose |
|---|---|---|
| 学名 | Anser albifrons | Anser anser |
| 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) | 87.1 cm (34.3 in) |
| 体重 | 2471.0 g (87.16 oz) | 3297.5 g (116.32 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | -- |
| 一腹卵数 | 3-9 | 3-12 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Greater White-fronted Goose only
None
Greylag Goose only
None
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.
Greylag Goose
Breeds on moorland, bogs, freshwater wetlands, and lake margins across Eurasia from Iceland to central Asia. Winters on estuaries, agricultural fields, and wetlands. Feral populations year-round in parks.
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.
Greylag Goose
A deep, loud 'aahng' honking. The ancestral goose of domesticated geese; its call is the template for the classic 'goose honk'. Flocks are highly vocal in flight.
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.
Greylag Goose
保全状況
Greater White-fronted Goose
Greylag Goose
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 …
Greylag Goose
Large and heavy; uniformly gray-brown with pale feather fringes on back. Head and neck grayish-brown. Orange-pink bill; pink legs. Pale gray forewing conspicuous in flight. Ancestor of domestic geese.
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。
Greylag Goose
ヨーロッパ、ロシアにかけて繁殖し、地中海周辺や南アジアで越冬するガン（体長75〜90cm）。灰褐色の体とオレンジ色の嘴が特徴的。Anser anser（ハイイロガン）は家禽のガチョウの祖先種で、最も大きく最も一般的な旧世界のガン。湿原、農地、川沿いに生息し、植物を主食とする。Anatidae科。