Meller's Duck vs Greater White-fronted Goose
Anas melleri 比較対象 Anser albifrons
Side-by-Side Comparison
| 属性 | Meller's Duck | Greater White-fronted Goose |
|---|---|---|
| 学名 | Anas melleri | Anser albifrons |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Endangered | Least Concern |
| 体長 | — | — |
| 翼開長 | 49.1 cm (19.3 in) | 81.6 cm (32.1 in) |
| 体重 | 1023.625 g (36.11 oz) | 2471.0 g (87.16 oz) |
| 食性 | Dives for fish and aquatic invertebrates in fast-flowing rivers; serrated bill grips slippery fish; diet … | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … |
| 一腹卵数 | 5-11 | 3-9 |
| Population Trend | — | — |
Habitat Comparison
Meller's Duck
Freshwater lakes, marshes, rivers, and rice paddies in the eastern highlands and north of Madagascar. Prefers undisturbed native forest wetlands. Endangered by hunting and habitat conversion.
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
Meller's Duck
Female produces a loud, resonant quacking sequence; male gives a soft, nasal grunt. This large Malagasy duck vocalizes with powerful quacking calls along forest rivers and marshes.
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.
Geographic Range & Migration
Meller's Duck
Resident in wetlands and lakes from Turkey and Egypt through East Africa to the Cape. Non-migratory and widely distributed.
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.
保全状況
Meller's Duck
Greater White-fronted Goose
How to Tell Them Apart
Meller's Duck
Dark brown-olive plumage streaked and mottled with pale buff; resembles large dark Mallard without green head. Iridescent green speculum with white borders. Yellow-brown bill; orange legs. Madagascar endemic.
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 …
About These Birds
Meller's Duck
A large brown dabbling duck resembling a female Mallard but larger, with green iridescent speculum and orange bill. Endemic to Madagascar. Endangered; threatened by hunting and wetland loss. One of Madagascar's rarest 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。