Greater White-fronted Goose vs Crested Duck
Anser albifrons 比較対象 Lophonetta specularioides
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Crested Duck |
|---|---|---|
| 学名 | Anser albifrons | Lophonetta specularioides |
| 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) | 53.8 cm (21.2 in) |
| 体重 | 2471.0 g (87.16 oz) | 941.3833333333333 g (33.21 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | -- |
| 一腹卵数 | 3-9 | 5-8 |
| 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.
Crested Duck
Fast-flowing Andean rivers, lakes, and puna wetlands from sea level to 4,500 m in Peru, Bolivia, Chile, Argentina, and the Falkland Islands. Occupies both coastal and high-altitude wetland habitats.
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.
Crested Duck
Produces a harsh, rattling call and loud hissing alarm notes. Both sexes vocalize with grating, nasal croaking sounds echoing across Andean rocky shores and rivers.
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.
Crested Duck
保全状況
Greater White-fronted Goose
Crested 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 …
Crested Duck
Brown body with dark streaking; long pointed crest on hindcrown. Face and throat pale with dark eye patch. Iridescent purple-bronze speculum bordered white. Bill and legs grayish. Sexes similar. Andean …
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。
Crested Duck
クレステッドダックは南米のアンデス山脈と南端のパタゴニアに分布するカモです。目の後ろの短い冠羽が特徴的です。高山の湖から南極近くの海岸まで幅広い環境に生息し、水草、藻類、無脊椎動物を採食します。