African Black Duck vs Barrow's Goldeneye

Anas sparsa comparado con Bucephala islandica

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Side-by-Side Comparison

Atributo African Black Duck Barrow's Goldeneye
Nombre científico Anas sparsa Bucephala islandica
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Least Concern
Longitud
Envergadura 49,5 cm (19.5 in) 44,3 cm (17.4 in)
Peso 996,8333333333334 g (35.16 oz) 838,0 g (29.56 oz)
Dieta Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … Dives for crustaceans, aquatic insects, and molluscs in mountain lakes and coastal bays. Diet similar …
Tamaño de la puesta 4-9 6-14
Population Trend
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Habitat Comparison

Hábitats compartidos

African Black Duck only

Ninguno

Barrow's Goldeneye only

Ninguno

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.

Barrow's Goldeneye

Canto

Male produces a whistled, nasal kaow-kaow call; female gives a harsh quacking series. The male's wheezy, double call differs from Common Goldeneye; heard on western North American lakes.

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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.

Barrow's Goldeneye

Breeds in Iceland, western Canada, and locally the western United States. Winters on coasts and lakes of the Pacific Northwest and eastern Canada.

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Estado de conservación

Least Concern

African Black Duck

Least Concern

Barrow's Goldeneye

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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 …

Barrow's Goldeneye

Plumaje

Male has iridescent purple-black head with crescent-shaped white facial patch; white body with black scapulars bearing bold white spots. Female grey with brown head, white collar; head rounder than Common …

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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.

Barrow's Goldeneye

El pato islandés o porrón islandés es un pato buceador de América del Norte y el noroeste de Europa, muy similar al pato chillón pero con la cabeza de color más purpúreo en el macho. A diferencia del pato chillón, tiene un parche facial en forma de media luna. Habita en lagos de agua clara alimentados por manantiales y ríos limpios, donde se alimenta principalmente de invertebrados bentónicos.

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