Madagascar Teal vs Greater White-fronted Goose
Anas bernieri 比較対象 Anser albifrons
Side-by-Side Comparison
| 属性 | Madagascar Teal | Greater White-fronted Goose |
|---|---|---|
| 学名 | Anas bernieri | Anser albifrons |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Endangered | Least Concern |
| 体長 | — | — |
| 翼開長 | 38.9 cm (15.3 in) | 81.6 cm (32.1 in) |
| 体重 | 365.0 g (12.88 oz) | 2471.0 g (87.16 oz) |
| 食性 | -- | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … |
| 一腹卵数 | 2-10 | 3-9 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Madagascar Teal only
Greater White-fronted Goose only
Madagascar Teal
Mangroves, coastal lagoons, freshwater lakes, and rivers of western Madagascar. Endangered; restricted to small fragmented wetland areas. Nests in mangrove cavities or tree holes near water.
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
Madagascar Teal
Female gives a nasal, quacking series; male utters a soft whistle. Extremely rare; calls resemble Grey Teal but slightly softer; heard only in restricted Malagasy freshwater habitat.
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
Madagascar Teal
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
Madagascar Teal
Greater White-fronted Goose
How to Tell Them Apart
Madagascar Teal
Plain warm brown plumage with faint spotting; head slightly paler buff-brown. Orange-pink bill. Dull reddish-brown speculum. Orange legs. Sexes similar. Endangered Madagascar endemic; mangrove and coastal wetland specialist.
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
Madagascar Teal
マダガスカルティールはマダガスカル西部に固有の極めて希少な絶滅危惧種です。淡褐色の羽毛と赤みがかった嘴が特徴です。マングローブ林、沿岸の湿地、塩水湖に生息しますが、生息地の大部分が農地転換や水質汚染で失われています。野生個体数は非常に少ないと推定されています。
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。