Spotted Whistling-duck vs Black-headed Duck
Dendrocygna guttata comparado con Heteronetta atricapilla
Side-by-Side Comparison
| Atributo | Spotted Whistling-duck | Black-headed Duck |
|---|---|---|
| Nombre científico | Dendrocygna guttata | Heteronetta atricapilla |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 41,3 cm (16.3 in) | 34,7 cm (13.7 in) |
| Peso | 677,5 g (23.90 oz) | 528,5 g (18.64 oz) |
| Dieta | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| Tamaño de la puesta | 10-11 | 2 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Spotted Whistling-duck only
Black-headed Duck only
Ninguno
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
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.
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Geographic Range & Migration
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
Estado de conservación
Spotted Whistling-duck
Black-headed Duck
How to Tell Them Apart
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.
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
About These Birds
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.
Black-headed Duck
El pato cabeza negra es un pequeño pato buceador (~530 g) de América del Sur, familia Anatidae, y el único miembro del género Heteronetta. Tiene la cabeza negra en el macho y cuerpo marrón. Parásita de nido obligada: pone sus huevos en los nidos de otras aves acuáticas, especialmente fochas y pollas de agua. Habita en lagos y lagunas con vegetación emergente de Argentina, Bolivia, Brasil, Chile, Paraguay y Uruguay. No cría su propia cría nunca.