African Black Duck vs Barrow's Goldeneye
Anas sparsa comparado con Bucephala islandica
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 | — | — |
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.
Song & Call Comparison
African Black Duck
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
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.
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.
Estado de conservación
African Black Duck
Barrow's Goldeneye
How to Tell Them Apart
African Black Duck
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
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 …
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.