Common Scoter vs African Pygmy-goose
Melanitta nigra เปรียบเทียบกับ Nettapus auritus
Side-by-Side Comparison
| คุณสมบัติ | Common Scoter | African Pygmy-goose |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Melanitta nigra | Nettapus auritus |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 44.2 cm (17.4 in) | 29.9 cm (11.8 in) |
| น้ำหนัก | 1127.25 g (39.76 oz) | 272.5 g (9.61 oz) |
| อาหาร | 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 … |
| จำนวนไข่ | 6-8 | 6-12 |
| Population Trend | — | — |
Habitat Comparison
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Common Scoter only
African Pygmy-goose only
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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.
สถานะการอนุรักษ์
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
A medium-sized sea duck (~1.1 kg) in family Anatidae, males entirely black with a knobbed yellow bill. Breeds on moorland lakes in northern Europe and western Siberia; winters in large flocks on shallow coastal seas. Dives for bivalves and crustaceans. Least Concern; monitored due to sensitivity to offshore energy development and oil spills.
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.