African Black Duck vs Siberian Scoter
Anas sparsa comparado con Melanitta stejnegeri
Side-by-Side Comparison
| Atributo | African Black Duck | Siberian Scoter |
|---|---|---|
| Nombre científico | Anas sparsa | Melanitta stejnegeri |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 49,5 cm (19.5 in) | 53,4 cm (21.0 in) |
| Peso | 996,8333333333334 g (35.16 oz) | 1267,5 g (44.71 oz) |
| Dieta | -- | Dives for bivalves, crustaceans, and aquatic invertebrates in coastal East Asian waters. Diet similar to … |
| Tamaño de la puesta | 4-9 | 6-9 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
African Black Duck only
Siberian Scoter 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.
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.
Siberian Scoter
Male emits a soft, piping whistle; female produces a guttural, grating call. Voice resembles White-winged Scoter; heard during winter on East Asian coasts and large inland seas.
Geographic Range & Migration
African Black Duck
Siberian Scoter
Breeds in boreal forests and tundra of central and eastern Siberia. Winters along the coasts of Japan, Korea, and northeastern China.
Estado de conservación
African Black Duck
Siberian Scoter
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 …
Siberian Scoter
Male is uniformly black with white secondaries forming wing patch; orange-yellow bill has large black knob at base and pale yellow tip. Female dark brown with paler facial patches and …
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.
Siberian Scoter
El negrón de Stejneger es un gran pato marino de Asia del este con el macho de color negro brillante con un llamativo pico naranja y amarillo con manchas naranjas y negras. Cría en el nordeste de Asia y pasa el invierno en el mar Amarillo, el mar de Japón y las aguas costeras del noreste de Asia. Está clasificado como vulnerable por el declive de sus poblaciones.