Spotted Whistling-duck vs White-winged Scoter
Dendrocygna guttata so với Melanitta deglandi
Side-by-Side Comparison
| Thuộc Tính | Spotted Whistling-duck | White-winged Scoter |
|---|---|---|
| Tên Khoa Học | Dendrocygna guttata | Melanitta deglandi |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 41,3 cm (16.3 in) | 54,0 cm (21.3 in) |
| Khối Lượng | 677,5 g (23.90 oz) | 1647,1666666666667 g (58.10 oz) |
| Chế Độ Ăn | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … |
| Số Trứng | 10-11 | 6-16 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Spotted Whistling-duck only
White-winged Scoter only
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
Song & Call Comparison
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
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.
Geographic Range & Migration
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
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.
Tình Trạng Bảo Tồn
Spotted Whistling-duck
White-winged Scoter
How to Tell Them Apart
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. Sexes similar.
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 …
About These Birds
Spotted Whistling-duck
A small dark brown whistling-duck with bold white spots on its flanks, orange-red bill and legs, and a pale face. Found in tropical wetlands of New Guinea, the Philippines, and Indonesia. Often found near freshwater streams and flooded grassland. Less gregarious than other whistling-ducks.
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.