African Black Duck vs Radjah Shelduck
Anas sparsa comparado con Radjah radjah
Side-by-Side Comparison
| Atributo | African Black Duck | Radjah Shelduck |
|---|---|---|
| Nombre científico | Anas sparsa | Radjah radjah |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 49,5 cm (19.5 in) | 54,0 cm (21.3 in) |
| Peso | 996,8333333333334 g (35.16 oz) | 883,5 g (31.16 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Dabbles for seeds and aquatic invertebrates; also grazes on grasses; diet shifts between land and … |
| Tamaño de la puesta | 4-9 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
African Black Duck only
Ninguno
Radjah Shelduck 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.
Radjah Shelduck
Mangroves, tidal mudflats, tropical coastal wetlands, and freshwater lagoons in New Guinea and the tropical north of Australia (Queensland, Northern Territory, Western Australia). Nests in tree hollows near water.
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.
Radjah Shelduck
A loud, rattling 'radjah-radjah' or repeated cackling 'rak-rak-rak'. Calls from tropical Australian and New Guinea wetlands. Name is partly onomatopoeic.
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.
Radjah Shelduck
Breeds in the eastern Arctic of Russia; winters across southern Asia, from the Indian subcontinent to Southeast Asia.
Estado de conservación
African Black Duck
Radjah Shelduck
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 …
Radjah Shelduck
White head and body with chestnut breastband and white-spotted chestnut scapulars. Pink bill and legs. Iridescent green speculum with white bar visible in flight. Sexes similar. Australasian mangrove specialist.
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.
Radjah Shelduck
El pato raja es un pato llamativo de Australia, Nueva Guinea e Indonesia. Tiene el plumaje principalmente blanco con la espalda de color castaño oscuro, pecho blanco y un pico de color rosa claro. Habita en manglares, estuarios y ríos costeros boscosos del norte de Australia y las islas cercanas. Es una especie arborícola que anida en huecos de árboles.