Red-breasted Goose vs African Pygmy-goose
Branta ruficollis 对比 Nettapus auritus
Side-by-Side Comparison
| 属性 | Red-breasted Goose | African Pygmy-goose |
|---|---|---|
| 学名 | Branta ruficollis | Nettapus auritus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 69.1 cm (27.2 in) | 29.9 cm (11.8 in) |
| 体重 | 1253.25 g (44.21 oz) | 272.5 g (9.61 oz) |
| 食性 | Grazes grasses, seeds, and aquatic plants; introduced to many wetlands; upends in shallow water for … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| 产卵数 | 3-10 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
Red-breasted Goose
Breeds on river-terrace tundra in northwestern Siberia, often near Peregrine or Rough-legged Buzzard nests for protection. Winters on agricultural steppes and lake margins around the Black Sea and Caspian Sea.
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
Red-breasted Goose
A high-pitched, rapid 'kik-kik-kik' call. More vocal during migration; flocks give constant chattering. Considered a more squeaky, high-pitched call than other Branta geese.
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
Red-breasted Goose
Breeds in Arctic and subarctic tundra in North America; winters along both US coasts and interior wetlands south to Central America.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
保护状况
Red-breasted Goose
African Pygmy-goose
How to Tell Them Apart
Red-breasted Goose
Unmistakable; vivid chestnut-red patch on face and breast bordered by white stripes. Black crown, back, wings, and belly. White flank stripe and undertail. Compact and striking. Sexes similar.
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
Red-breasted Goose
红胸黑雁是颜色鲜艳的小型雁类，胸部和脸侧具鲜明的栗红色斑块，头颈黑色，具白色边界线，腹部黑色。繁殖于西伯利亚北部苔原，越冬于里海和黑海沿岸，尤以罗马尼亚、保加利亚为主。由于越冬地农业变化和猎捕，被列为易危物种。
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.