Greater White-fronted Goose vs Emperor Goose
Anser albifrons 对比 Anser canagicus
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Emperor Goose |
|---|---|---|
| 学名 | Anser albifrons | Anser canagicus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 81.6 cm (32.1 in) | 74.8 cm (29.4 in) |
| 体重 | 2471.0 g (87.16 oz) | 2300.45 g (81.15 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Grazes aquatic plants and terrestrial grasses; upends in shallow water; winter diet shifts toward grain … |
| 产卵数 | 3-9 | 1-8 |
| 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.
Emperor Goose
Breeds on coastal tundra near the Bering Sea in Alaska and Chukotka. Winters on rocky coastal shorelines, kelp beds, and intertidal flats along the Aleutian Islands and Alaska Peninsula.
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.
Emperor Goose
A low, nasal 'clag-clag' call. Less vocal than other Anser geese. Gives contact calls in flocks during Arctic breeding and Pacific coast wintering. Somewhat quiet.
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.
Emperor Goose
Breeds in the eastern Arctic of Canada; winters along the Atlantic coast from Newfoundland to Florida and occasionally to Texas.
保护状况
Greater White-fronted Goose
Emperor 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 …
Emperor Goose
Body plumage blue-gray with black and white feather scalloping. White head and hindneck contrasting with dark throat. Orange-yellow legs. Bill pink-orange. Tail white. Adults striking; sexes similar.
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.
Emperor Goose
皇帝雁是一种中型海雁，繁殖于阿拉斯加西部及西伯利亚东北部，越冬于阿留申群岛沿岸。头部和颈背白色，颈前黑色，形成鲜明对比。主要栖息于海滨苔原和沿海滩涂，以草地植物和海藻为食。受栖息地变化和气候变暖的影响，种群数量已有所下降。