African Black Duck vs Scaly-sided Merganser

Anas sparsa comparado con Mergus squamatus

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Side-by-Side Comparison

Atributo African Black Duck Scaly-sided Merganser
Nombre científico Anas sparsa Mergus squamatus
Orden Anseriformes Anseriformes
Familia Anatidae Anatidae
Estado de conservación Least Concern Endangered
Longitud
Envergadura 49,5 cm (19.5 in) 51,2 cm (20.2 in)
Peso 996,8333333333334 g (35.16 oz) 1145,8 g (40.42 oz)
Dieta Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … Dives for fish in fast-flowing East Asian rivers. Endangered; highly piscivorous with serrated bill adapted …
Tamaño de la puesta 4-9 4-14
Population Trend
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Habitat Comparison

Hábitats compartidos

African Black Duck only

Ninguno

Scaly-sided Merganser 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.

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Song & Call Comparison

African Black Duck

Canto

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.

Scaly-sided Merganser

Canto

Male gives a quiet, low grunting call; female produces a guttural, croaking series. Endangered; calls are poorly known; similar to Red-breasted Merganser but quieter in Manchurian forest rivers.

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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.

Scaly-sided Merganser

Breeds in southern Russia, northern China, and the Russian Far East. Winters in southern China and Korea. Found on fast-flowing forested rivers.

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Estado de conservación

Least Concern

African Black Duck

Endangered

Scaly-sided Merganser

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How to Tell Them Apart

African Black Duck

Plumaje

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 …

Scaly-sided Merganser

Plumaje

Male has iridescent dark green head with long flat crest, white body with distinctive black scaly pattern on flanks, and black back with white patches. Female has brownish-red crested head …

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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.

Scaly-sided Merganser

El merganso escamoso es un merganso del este de Asia en peligro de extinción que cría en el lejano oriente ruso y el nordeste de China. El macho tiene la cabeza de color verde-negro brillante con un largo moño y los flancos color crema finamente escamados. Habita en ríos y arroyos forestales limpios, y pasa el invierno en ríos del este y centro de China.

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