African Black Duck vs Ashy-headed Goose
Anas sparsa comparado con Chloephaga poliocephala
Side-by-Side Comparison
| Atributo | African Black Duck | Ashy-headed Goose |
|---|---|---|
| Nombre científico | Anas sparsa | Chloephaga poliocephala |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 49,5 cm (19.5 in) | 69,1 cm (27.2 in) |
| Peso | 996,8333333333334 g (35.16 oz) | 1779,25 g (62.76 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Eats grasses, seeds, and aquatic invertebrates; grazes upland pastures and dabbles in wetlands; diet varies … |
| Tamaño de la puesta | 4-9 | 4-6 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
African Black Duck only
Ninguno
Ashy-headed Goose 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.
Ashy-headed Goose
Temperate forests, forest clearings, and lake margins in southern Chile and Patagonian Argentina. Partially migratory; breeds in beech forest zones and winters on open grasslands farther north.
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.
Ashy-headed Goose
A whistled 'seeeeu' from males and a lower cackling from females. Ashy-headed Goose calls carry across Andean foothills and Patagonian grassland habitats.
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.
Ashy-headed Goose
Inhabits wetlands and flooded grasslands across South and Southeast Asia, from India to Indonesia. Largely resident year-round.
Estado de conservación
African Black Duck
Ashy-headed 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 …
Ashy-headed Goose
Gray head and neck contrast with chestnut breast and rufous-barred flanks. Back brown; belly white. White wing patch in flight with iridescent green speculum. Yellow-orange legs. Sexes similar but females …
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.
Ashy-headed Goose
El cauquén real es un ganso del sur de América del Sur que habita en pastizales andinos y patagónicos desde Chile hasta Argentina. Tiene la cabeza gris, el cuerpo barrado de negro y blanco, y las alas con partes blancas y negras muy llamativas. Es una especie migratoria que durante el invierno desciende a menores altitudes y se desplaza hacia el este de la Patagonia.