Greater White-fronted Goose vs White-headed Steamerduck
Anser albifrons 对比 Tachyeres leucocephalus
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | White-headed Steamerduck |
|---|---|---|
| 学名 | Anser albifrons | Tachyeres leucocephalus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 81.6 cm (32.1 in) | 55.0 cm (21.7 in) |
| 体重 | 2471.0 g (87.16 oz) | 3250.0 g (114.64 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | -- |
| 产卵数 | 3-9 | 3-6 |
| Population Trend | — | — |
Habitat Comparison
共同栖息地
Greater White-fronted Goose only
White-headed Steamerduck only
无
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-headed Steamerduck
Rocky coastal shores, sea channels, and sheltered bays along the Patagonian coast of Chubut Province, Argentina. Flightless; strictly coastal. Nests on rocky headlands. Very limited geographic range.
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-headed Steamerduck
A deep, rattling call from Patagonian coastal habitat. VU status; calls similar to Magellanic Steamerduck but possibly subtly distinct. Vocalizations in wild remain understudied.
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-headed Steamerduck
保护状况
Greater White-fronted Goose
White-headed Steamerduck
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-headed Steamerduck
Flightless. Males have white head and neck contrasting with dark gray-brown body; orange bill. Females brown with white facial markings and less contrasting head. Restricted to Chubut, Argentina coast.
About These Birds
Greater White-fronted Goose
A medium-large goose with a white forehead patch, orange bill, grey-brown plumage, and variable black barring on the belly. Widespread and numerous; one of the most abundant geese in the world. Breeds across the high Arctic; winters in a wide range of temperate wetland and agricultural habitats.
White-headed Steamerduck
白头蒸汽鸭是分布于阿根廷巴塔哥尼亚南部海岸的不会飞行的蒸汽鸭，雄鸟头部白色为特征，是本属中最容易辨认的种类。不会飞翔，以翅膀拍水前进，以软体动物和甲壳类为食。