White-winged Scoter vs Blue-billed Teal
Melanitta deglandi เปรียบเทียบกับ Spatula hottentota
Side-by-Side Comparison
| คุณสมบัติ | White-winged Scoter | Blue-billed Teal |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Melanitta deglandi | Spatula hottentota |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 54.0 cm (21.3 in) | 29.4 cm (11.6 in) |
| น้ำหนัก | 1647.1666666666667 g (58.10 oz) | 269.2 g (9.50 oz) |
| อาหาร | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| จำนวนไข่ | 6-16 | 5-12 |
| Population Trend | — | — |
Habitat Comparison
Blue-billed Teal
Freshwater lakes, marshes, pans, and flooded grasslands across sub-Saharan Africa from Senegal and Sudan south to the Cape. Nomadic; follows seasonal rains. Common but easily overlooked among reed beds.
Song & Call Comparison
White-winged Scoter
Male produces a soft, whistled note; female gives a harsh, grating call. Similar to Velvet Scoter; the female's rasping call carries across North Pacific bays and coastal inlets.
Blue-billed Teal
Male utters a soft, teal-like peep; female gives a muted quack. Pairs call quietly in dense papyrus; soft contact calls help birds maintain proximity in thick African marsh vegetation.
Geographic Range & Migration
White-winged Scoter
Breeds in boreal forest and tundra of interior North America. Winters along Pacific and Atlantic coasts south to California and the Gulf states.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
สถานะการอนุรักษ์
White-winged Scoter
Blue-billed Teal
How to Tell Them Apart
White-winged Scoter
Male is black with conspicuous white secondaries and a white comma-shaped mark below eye; orange-yellow bill with black basal knob. Female dark brownish-black with two pale facial patches and white …
Blue-billed Teal
Small; males have pale blue-gray bill contrasting with brown-gray body. Head finely spotted; underparts barred brown and white. Males show powder-blue forewing in flight. Females browner. African marsh species.
About These Birds
White-winged Scoter
A large diving duck (~1.6 kg) in family Anatidae, distinguished by white secondaries visible in flight. Breeds on freshwater lakes in boreal North America; winters along Pacific and Atlantic coasts. Dives for mussels, clams, and aquatic insects. Least Concern; North American populations remain broadly stable despite some local declines.
Blue-billed Teal
A small dark teal with blue-grey bill and legs, brown-streaked plumage, and fine pale spotting on the flanks. The most widespread teal in sub-Saharan Africa. Found on freshwater lakes and marshes. Highly nomadic; follows seasonal rainfall. Swims low in the water like a pochard.