Black-bellied Whistling-duck vs Spotted Whistling-duck
Dendrocygna autumnalis comparado com Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Black-bellied Whistling-duck | Spotted Whistling-duck |
|---|---|---|
| Nome científico | Dendrocygna autumnalis | Dendrocygna guttata |
| Ordem | Anseriformes | Anseriformes |
| Família | Anatidae | Anatidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 48,2 cm (19.0 in) | 41,3 cm (16.3 in) |
| Peso | 757,9 g (26.73 oz) | 677,5 g (23.90 oz) |
| Dieta | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| Tamanho da postura | 9-18 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Habitats partilhados
Black-bellied Whistling-duck only
Nenhum
Spotted Whistling-duck only
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.
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
Song & Call Comparison
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.
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
Geographic Range & Migration
Black-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Estado de conservação
Black-bellied Whistling-duck
Spotted Whistling-duck
How to Tell Them Apart
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.
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. Sexes similar.
About These Birds
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.
Spotted Whistling-duck
O parreco-pintalgado é um pato assobiadeiro grande encontrado nas Filipinas, Indonésia e Papua Nova Guiné. Distingue-se pelos seus flancos e cobertura da cauda largamente com pintas brancas num fundo escuro. Tem pescoço escuro, coroa castanha e bico e pernas cinzentos. Habita zonas húmidas tropicais de baixa altitude, lagos e arrozais. Tem uma distribuição fragmentada e é classificado como quase ameaçado em algumas regiões.