Greater White-fronted Goose vs Common Pochard
Anser albifrons 对比 Aythya ferina
Side-by-Side Comparison
| 属性 | Greater White-fronted Goose | Common Pochard |
|---|---|---|
| 学名 | Anser albifrons | Aythya ferina |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Vulnerable |
| 体长 | — | — |
| 翼展 | 81.6 cm (32.1 in) | 41.7 cm (16.4 in) |
| 体重 | 2471.0 g (87.16 oz) | 845.5 g (29.82 oz) |
| 食性 | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow water; diet dominated by hard-shelled benthic … |
| 产卵数 | 3-9 | 3-22 |
| 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.
Common Pochard
Breeds on freshwater lakes and marshes with emergent vegetation across Eurasia from Iceland and western Europe east to Siberia. Winters on large open lakes, reservoirs, and estuaries.
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.
Common Pochard
Male emits a soft, wheezing purr; female gives a harsh, grating quacking series. The male's gentle, sibilant purring contrasts with the female's loud, grating call on European and Asian lakes.
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.
Common Pochard
Breeds across northern and central North America; winters in Mexico, Central America, and along both US coasts.
保护状况
Greater White-fronted Goose
Common Pochard
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 …
Common Pochard
Males have chestnut-red head and neck; black breast; pale gray body; black undertail. Red eye. Blue-gray bill with dark base and tip. Females brown with pale face and eye-ring. Gray …
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.
Common Pochard
红头潜鸭是常见的欧亚潜鸭，广泛繁殖于欧洲和亚洲温带地区，越冬于地中海、中东及亚洲南部。雄鸟头部砖红色，背部灰白色，胸部黑色；雌鸟褐色。善于潜水觅食，以水生植物、种子和无脊椎动物为食。近年来欧洲种群数量有所下降。