Barnacle Goose vs African Pygmy-goose
Branta leucopsis 对比 Nettapus auritus
Side-by-Side Comparison
| 属性 | Barnacle Goose | African Pygmy-goose |
|---|---|---|
| 学名 | Branta leucopsis | Nettapus auritus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 76.4 cm (30.1 in) | 29.9 cm (11.8 in) |
| 体重 | 1685.0 g (59.44 oz) | 272.5 g (9.61 oz) |
| 食性 | Large white swan grazing aquatic plants and grasses; upends for submerged vegetation; supplements diet with … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| 产卵数 | 2-9 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Barnacle Goose
Breeds on inaccessible Arctic cliff ledges in Greenland, Svalbard, and Novaya Zemlya. Winters on coastal saltmarshes, pastures, and estuaries in northwestern Europe, particularly Scotland and Ireland.
African Pygmy-goose
Freshwater lakes, ponds, and rivers with floating water lilies and other aquatic vegetation across sub-Saharan Africa from Senegal to Tanzania. Nests in tree cavities near water. Highly dependent on water lily vegetation.
Song & Call Comparison
Barnacle Goose
A rapid, high-pitched barking 'uk-uk-uk' given rapidly in flocks. Higher-pitched and more rapid than Canada Goose. Migrating flocks create a constant excited barking chorus.
African Pygmy-goose
Male produces a soft, wheezy whistle; female gives a quiet, duck-like quack. Pairs exchange rapid twittering notes during courtship on lily-covered African pools.
Geographic Range & Migration
Barnacle Goose
Breeds in Arctic tundra of Alaska and Canada; winters on the Pacific and Atlantic coasts of the United States and northern Mexico.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
保护状况
Barnacle Goose
African Pygmy-goose
How to Tell Them Apart
Barnacle Goose
Striking black, white and gray pattern. White face and forehead; black crown, neck, and upper breast. Gray back with black and white barring. White underparts. Black tail. Sexes similar; elegant …
African Pygmy-goose
Tiny. Males have glossy dark green head with orange facial patch and ear spot; chestnut-orange flanks; white underparts; black and green back. Females duller with dark eye-stripe. Small yellow-green bill.
About These Birds
Barnacle Goose
白颊黑雁是北极雁类，繁殖于格陵兰、斯匹次卑尔根和俄罗斯新地岛，越冬于英国、爱尔兰及西欧北海沿岸。头颈黑色，脸白色，体羽灰黑色带细横纹，腹部白色。以草地和农田植物为食。在中世纪，人们误以为其从藤壶中孵化而来，故又称藤壶雁。
African Pygmy-goose
A tiny jewel-like duck—one of Africa's smallest waterfowl. Males have iridescent green-and-white plumage, an orange bill, and a dark green cap; females are mottled brown. Found on lily-covered lakes in sub-Saharan Africa. Perches on water lily pads and feeds on their seeds and flowers.