Wandering Whistling-duck vs Black-bellied Whistling-duck
Dendrocygna arcuata comparado com Dendrocygna autumnalis
Side-by-Side Comparison
| Atributo | Wandering Whistling-duck | Black-bellied Whistling-duck |
|---|---|---|
| Nome científico | Dendrocygna arcuata | Dendrocygna autumnalis |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 37,2 cm (14.6 in) | 48,2 cm (19.0 in) |
| Peso | 779,5 g (27.50 oz) | 757,9 g (26.73 oz) |
| Dieta | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … |
| Tamanho da postura | 6-15 | 9-18 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Wandering Whistling-duck only
Nenhum
Black-bellied Whistling-duck only
Nenhum
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.
Black-bellied Whistling-duck
Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.
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.
Black-bellied Whistling-duck
A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.
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.
Black-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
Estado de conservação
Wandering Whistling-duck
Black-bellied Whistling-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.
Black-bellied Whistling-duck
Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. Sexes similar.
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.
Black-bellied Whistling-duck
O parreco-de-barriga-preta é um pato assobiadeiro grande que habita zonas húmidas tropicais das Américas, desde o Texas e México até à Argentina. Tem barriga preta, peito castanho ruivo, cabeça cinzenta e bico e pernas vermelhos. Distingue-se dos outros parrecos pelos grandes remendos brancos nas asas visíveis em voo. Muitas vezes empoleira-se em árvores e arbustos. É gregário e frequentemente visto em bandos numerosos em zonas húmidas tropicais e arrozais.