Wandering Whistling-duck vs Masked Duck
Dendrocygna arcuata в сравнении с Nomonyx dominicus
Side-by-Side Comparison
| Характеристика | Wandering Whistling-duck | Masked Duck |
|---|---|---|
| Научное название | Dendrocygna arcuata | Nomonyx dominicus |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 37,2 cm (14.6 in) | 27,6 cm (10.9 in) |
| Масса | 779,5 g (27.50 oz) | 361,0 g (12.73 oz) |
| Питание | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Dives and dabbles for aquatic seeds, plant matter, and invertebrates in freshwater marshes and ponds … |
| Размер кладки | 6-15 | 4-6 |
| Population Trend | — | — |
Habitat Comparison
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.
Masked Duck
Male emits a soft, dove-like cooing note; female gives a harsh, emphatic quack. The male's gentle, almost melodic cooing is surprising for a stiff-tail; heard in tropical American marshes.
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.
Masked Duck
Resident from Mexico and the Caribbean south through Central America to northern South America. Found in lowland freshwater marshes and lagoons.
Охранный статус
Wandering Whistling-duck
Masked Duck
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.
Masked Duck
Male is rich rufous-chestnut with black mask from forehead to face, boldly spotted black on upperparts; blue bill. Female is streaked buff and brown with two dark facial stripes crossing …
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.
Masked Duck
A small stiff-tailed duck (~360 g) of family Anatidae, breeding males with a black mask and chestnut body. Inhabits densely vegetated freshwater marshes and ponds from southern Texas to South America and the Caribbean. Dives for seeds and aquatic invertebrates. Secretive and rarely observed. Least Concern; tolerates a broad range of wetland habitats.