Wandering Whistling-duck vs Siberian Scoter
Dendrocygna arcuata เปรียบเทียบกับ Melanitta stejnegeri
Side-by-Side Comparison
| คุณสมบัติ | Wandering Whistling-duck | Siberian Scoter |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Dendrocygna arcuata | Melanitta stejnegeri |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 37.2 cm (14.6 in) | 53.4 cm (21.0 in) |
| น้ำหนัก | 779.5 g (27.50 oz) | 1267.5 g (44.71 oz) |
| อาหาร | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives for bivalves, crustaceans, and aquatic invertebrates in coastal East Asian waters. Diet similar to … |
| จำนวนไข่ | 6-15 | 6-9 |
| Population Trend | — | — |
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Wandering Whistling-duck only
ไม่มี
Siberian Scoter only
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
Song & Call Comparison
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
Siberian Scoter
Male emits a soft, piping whistle; female produces a guttural, grating call. Voice resembles White-winged Scoter; heard during winter on East Asian coasts and large inland seas.
Geographic Range & Migration
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
Siberian Scoter
Breeds in boreal forests and tundra of central and eastern Siberia. Winters along the coasts of Japan, Korea, and northeastern China.
สถานะการอนุรักษ์
Wandering Whistling-duck
Siberian Scoter
How to Tell Them Apart
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
Siberian Scoter
Male is uniformly black with white secondaries forming wing patch; orange-yellow bill has large black knob at base and pale yellow tip. Female dark brown with paler facial patches and …
About These Birds
Wandering Whistling-duck
A medium-sized whistling-duck with rufous-brown body, dark brown back, pale buff underparts, and a chestnut collar. Found in tropical wetlands from Indonesia to Australia and Pacific islands. Highly social and nomadic. Forages by dabbling and diving in shallow freshwater.
Siberian Scoter
A medium-large sea duck (~1.3 kg) of family Anatidae, closely related to White-winged Scoter and endemic to eastern Siberia and northeastern Asia. Breeds near boreal lakes and winters in coastal seas of East Asia. Feeds by diving for benthic mollusks and crustaceans. Least Concern; recently split from White-winged Scoter as a distinct species.