Common Scoter vs African Pygmy-goose
Melanitta nigra 对比 Nettapus auritus
Side-by-Side Comparison
| 属性 | Common Scoter | African Pygmy-goose |
|---|---|---|
| 学名 | Melanitta nigra | Nettapus auritus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 44.2 cm (17.4 in) | 29.9 cm (11.8 in) |
| 体重 | 1127.25 g (39.76 oz) | 272.5 g (9.61 oz) |
| 食性 | Dives for bivalves, especially cockles, mussels, and clams, in shallow coastal seas. Also eats crustaceans … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| 产卵数 | 6-8 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
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
Common Scoter
Male gives a soft, piping whistle; female produces a harsh, rasping call. The male's piping whistle is subtle; female's harsh calls dominate on European winter coasts and estuaries.
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
Common Scoter
Breeds on moorland and boreal tundra from Iceland and Britain east to western Siberia. Winters on northwestern European coasts and the Baltic Sea.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
保护状况
Common Scoter
African Pygmy-goose
How to Tell Them Apart
Common Scoter
Male is entirely sooty black without white markings; orange-yellow patch on upper bill with small black knob. Female brownish-black above with contrasting pale cream cheeks and throat.
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
Common Scoter
黑海番鸭是欧亚大陆的黑色海鸭，雄鸟全身黑色，仅嘴基具明亮的橙黄色斑块；雌鸟褐色，脸颊浅色。繁殖于苏格兰、斯堪的纳维亚和西伯利亚北部，越冬于西欧和北非大西洋沿岸。善潜水，以软体动物和甲壳类为食，常在近岸浅海越冬。
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.