Greater White-fronted Goose vs Ashy-headed Goose
Anser albifrons 对比 Chloephaga poliocephala
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Ashy-headed Goose |
|---|---|---|
| 学名 | Anser albifrons | Chloephaga poliocephala |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 81.6 cm (32.1 in) | 69.1 cm (27.2 in) |
| 体重 | 2471.0 g (87.16 oz) | 1779.25 g (62.76 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | -- |
| 产卵数 | 3-9 | 4-6 |
| Population Trend | — | — |
Habitat Comparison
共同栖息地
Greater White-fronted Goose only
无
Ashy-headed Goose only
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.
Ashy-headed Goose
Temperate forests, forest clearings, and lake margins in southern Chile and Patagonian Argentina. Partially migratory; breeds in beech forest zones and winters on open grasslands farther north.
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.
Ashy-headed Goose
A whistled 'seeeeu' from males and a lower cackling from females. Ashy-headed Goose calls carry across Andean foothills and Patagonian grassland habitats.
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.
Ashy-headed Goose
保护状况
Greater White-fronted Goose
Ashy-headed 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 …
Ashy-headed Goose
Gray head and neck contrast with chestnut breast and rufous-barred flanks. Back brown; belly white. White wing patch in flight with iridescent green speculum. Yellow-orange legs. Sexes similar but females …
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.
Ashy-headed Goose
灰头雁是南美洲南部特有的中型雁类，分布于智利南部、阿根廷西南部和福克兰群岛。雌雄羽色相近，头颈灰色，体羽栗褐色带黑色横纹，翼具白色镜斑。栖息于开阔的草原、湿地和森林边缘，以草地植物为食，常沿安第斯山脉河谷迁徙。