African Black Duck vs Blue-winged Goose
Anas sparsa comparado con Cyanochen cyanoptera
Side-by-Side Comparison
| Atributo | African Black Duck | Blue-winged Goose |
|---|---|---|
| Nombre científico | Anas sparsa | Cyanochen cyanoptera |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Near Threatened |
| Longitud | — | — |
| Envergadura | 49,5 cm (19.5 in) | 65,2 cm (25.7 in) |
| Peso | 996,8333333333334 g (35.16 oz) | 1796,25 g (63.36 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Eats aquatic plants, seeds, and invertebrates; dabbles in shallow ponds; diet shifts toward invertebrates in … |
| Tamaño de la puesta | 4-9 | 4-12 |
| Population Trend | — | — |
Habitat Comparison
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.
Blue-winged Goose
Alpine and subalpine grasslands, riverbanks, and marshy meadows at 2,800–4,200 m on the Ethiopian Highlands. Grazes along stream and river margins. Strongly tied to highland wetlands near cold mountain streams.
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.
Blue-winged Goose
A soft, nasal bleating call from Ethiopian highland wetlands. The NT status and restricted Afroalpine range mean vocalizations are poorly documented in systematic detail.
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.
Blue-winged Goose
Breeds in northern prairie wetlands; winters along the Atlantic and Gulf coasts of the United States.
Estado de conservación
African Black Duck
Blue-winged Goose
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 …
Blue-winged Goose
Mostly dull gray-brown; head paler gray. Distinctive pale blue wing patch conspicuous in flight. Underparts slightly paler. Bill and legs pinkish-gray. Sexes similar. Endemic to Ethiopian highlands.
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.
Blue-winged Goose
El ganso aliazul etíope es un ganso de color gris-marrón con alas de color azul índigo llamativo visible en vuelo, siendo su rasgo más característico. Endémico de las montañas de Etiopía, habita en lagos de altitud, ríos de montaña y prados alpinos generalmente por encima de los 3.000 metros. Está clasificado como vulnerable, con una pequeña y decreciente población.