Ruddy-headed Goose vs Wandering Whistling-duck
Chloephaga rubidiceps so với Dendrocygna arcuata
Side-by-Side Comparison
| Thuộc Tính | Ruddy-headed Goose | Wandering Whistling-duck |
|---|---|---|
| Tên Khoa Học | Chloephaga rubidiceps | Dendrocygna arcuata |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 65,1 cm (25.6 in) | 37,2 cm (14.6 in) |
| Khối Lượng | 1756,8333333333333 g (61.97 oz) | 779,5 g (27.50 oz) |
| Chế Độ Ăn | -- | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| Số Trứng | 3-8 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Không
Ruddy-headed Goose only
Wandering Whistling-duck only
Ruddy-headed Goose
Breeds on open tussock grasslands and moorland in Tierra del Fuego and the Falkland Islands. Mainland wintering population on Patagonian grasslands now critically small. Falkland Islands population relatively stable.
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
Ruddy-headed Goose
A high, whistled 'whee' from males and a cackling rattle from females. Calls similar to Ashy-headed Goose. Falkland Islands population; calls in open coastal grassland.
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.
Geographic Range & Migration
Ruddy-headed Goose
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
Tình Trạng Bảo Tồn
Ruddy-headed Goose
Wandering Whistling-duck
How to Tell Them Apart
Ruddy-headed Goose
Distinctive rufous-brown head and neck; body barred rufous and black above; underparts buff-white finely barred. Orange-yellow legs. White wing patches in flight. Compact; sexes similar. Falklands and Patagonia.
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.
About These Birds
Ruddy-headed Goose
A small sheldgoose with a rich rufous-brown head and neck, buff-white belly, and barred back. One of the world's rarest geese; mainland population now nearly extinct. Breeds in Tierra del Fuego; main stronghold remains the Falkland Islands. Winters on the Argentine pampas.
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.