Black-bellied Whistling-duck vs Spotted Whistling-duck
Dendrocygna autumnalis comparado con Dendrocygna guttata
Side-by-Side Comparison
| Atributo | Black-bellied Whistling-duck | Spotted Whistling-duck |
|---|---|---|
| Nombre científico | Dendrocygna autumnalis | Dendrocygna guttata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| 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 … |
| Tamaño de la puesta | 9-18 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Black-bellied Whistling-duck only
Ninguno
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 conservación
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
El pato silbador piquirrojo es un pato silbador de América, reconocible por el largo pico rojo, las patas rojas y el plumaje de color castaño con blanco en el ala en vuelo. Es un pato sociable y ruidoso que habita en lagunas, pantanos y humedales tropicales desde el sur de Texas hasta el norte de Argentina. Anida en huecos de árboles, a menudo en cavidades de palmeras.
Spotted Whistling-duck
El pato silbador moteado es un pato silbador de Indonesia, Filipinas y Nueva Guinea, fácilmente reconocible por el plumaje marrón oscuro con manchas blancas en los flancos. Habita en bosques húmedos tropicales con estanques, pantanos y arrozales. Como todos los patos silbadores, tiene un llamado silbante característico y postura erguida. Está clasificado como casi amenazado.