African Black Duck vs Black-headed Duck

Anas sparsa comparado con Heteronetta atricapilla

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Side-by-Side Comparison

Atributo African Black Duck Black-headed Duck
Nombre científico Anas sparsa Heteronetta atricapilla
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 49,5 cm (19.5 in) 34,7 cm (13.7 in)
Peso 996,8333333333334 g (35.16 oz) 528,5 g (18.64 oz)
Dieta Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet …
Tamaño de la puesta 4-9 2
Population Trend
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Habitat Comparison

Hábitats compartidos

African Black Duck only

Black-headed Duck only

African Black Duck

Fast-flowing rocky rivers and streams, mountain gorges, and waterfalls from sea level to 4,000 m across sub-Saharan Africa from Ethiopia and Kenya south to the Cape. Requires clear turbulent water with boulders.

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Song & Call Comparison

African Black Duck

Canto

Produces a harsh, resonant quacking call; alarm is a loud, emphatic quack repeated rapidly. Both sexes call with strong quacking; pairs duet with synchronized calls along African rivers.

Black-headed Duck

Canto

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.

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Geographic Range & Migration

African Black Duck

Resident across South and Southeast Asia, from India to southern China and the Philippines. Non-migratory in most of its range.

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.

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Estado de conservación

Least Concern

African Black Duck

Least Concern

Black-headed Duck

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How to Tell Them Apart

African Black Duck

Plumaje

Dark blackish-brown plumage with bold white spots on back and scapulars. Iridescent blue-green speculum with white borders. Head dark with pale spots. Bill and legs dark gray. Sexes similar. Fast-flowing …

Black-headed Duck

Plumaje

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.

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About These Birds

African Black Duck

El pato africano moteado es un pato de tamaño mediano de color marrón oscuro con motas blancas en el pecho y los flancos. Habita en ríos de rápido caudal, cascadas y arroyos de montaña en África central y meridional, siendo inusual entre los patos por su preferencia por aguas corrientes y turbulentas. También se encuentra en altitudes elevadas en las zonas montañosas de África oriental.

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.

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