Wandering Whistling-duck vs Comb Duck
Dendrocygna arcuata comparado com Sarkidiornis sylvicola
Side-by-Side Comparison
| Atributo | Wandering Whistling-duck | Comb Duck |
|---|---|---|
| Nome científico | Dendrocygna arcuata | Sarkidiornis sylvicola |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 37,2 cm (14.6 in) | 60,9 cm (24.0 in) |
| Peso | 779,5 g (27.50 oz) | 1817,5 g (64.11 oz) |
| Dieta | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Feeds on seeds, plant material, and invertebrates; dabbles and sifts shallow water; diet varies widely … |
| Tamanho da postura | 6-15 | -- |
| 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.
Comb Duck
Freshwater lakes, rivers, flooded savannas, and seasonally inundated forest in lowland tropical South America from Panama south to Bolivia, Brazil, and northern Argentina. Nests in tree cavities near permanent water.
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.
Comb Duck
A soft, nasal 'wuk-wuk' call. Both sexes give similar quiet calls. Generally a less vocal duck than most waterfowl. Gives a rattling wingbeat sound during flight.
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.
Comb Duck
Breeds in the prairie pothole region of central North America; winters along the Pacific coast from Alaska to Mexico.
Estado de conservação
Wandering Whistling-duck
Comb 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.
Comb Duck
Males have white head densely spotted black; black back with blue-green iridescence; white underparts with gray flanks. Prominent black fleshy knob on bill. Females smaller, duller, lack knob. South American.
About These Birds
Wandering Whistling-duck
O parreco-vagabundo é um pato assobiadeiro encontrado da Indonésia e Filipinas à Austrália. Tem a coloração castanho-avermelhada típica dos parrecos com flancos largamente barrados de castanho-escuro e branco. Habita zonas húmidas de água doce, incluindo lagos, pântanos e planícies inundadas tropicais. É gregário e frequentemente mistura-se com outras espécies de parrecos. Os bandos podem ser muito numerosos durante as estações não reprodutoras.
Comb Duck
A large pied duck with a black-and-white body and, in males, a large black knob on the upper mandible during breeding season. The New World Comb Duck found from Panama to northern Argentina. Nests in tree cavities near lakes. Feeds by dabbling and grazing in wetland margins.