African Black Duck vs West Indian Whistling-duck
Anas sparsa 对比 Dendrocygna arborea
Side-by-Side Comparison
| 属性 | African Black Duck | West Indian Whistling-duck |
|---|---|---|
| 学名 | Anas sparsa | Dendrocygna arborea |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Near Threatened |
| 体长 | — | — |
| 翼展 | 49.5 cm (19.5 in) | 51.3 cm (20.2 in) |
| 体重 | 996.8333333333334 g (35.16 oz) | 1030.0 g (36.33 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Eats grasses, sedges, and grains; migratory goose foraging in Arctic tundra in summer; overwinters on … |
| 产卵数 | 4-9 | 4-16 |
| 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.
West Indian Whistling-duck
Freshwater lakes, mangrove swamps, palm savannas, and forested wetlands in the Greater and Lesser Antilles. Nests in palm crowns and hollow trees. Highly dependent on Caribbean wet forests and freshwater lagoons.
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.
West Indian Whistling-duck
A loud, 3-syllable whistle 'whee-whee-whee'. The NT conservation status reflects population pressures. Less commonly heard than its more abundant whistling-duck relatives.
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.
West Indian Whistling-duck
Found in grassy wetlands and floodplains of Madagascar. Non-migratory and endemic to the island's eastern marshes.
保护状况
African Black Duck
West Indian Whistling-duck
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 …
West Indian Whistling-duck
Dark brown upperparts; head and neck dark with pale sides. Flanks black with bold white spots. Breast dark brown; belly blackish with white flank streaks. Long dark legs. Largest Dendrocygna. …
About These Birds
African Black Duck
A medium-sized dark brown duck with white spots on the back, a dark bill, and orange legs. Found along fast-flowing rocky rivers and streams in Africa. Territorial and monogamous; pairs defend stretches of river. Related to Pacific Black Duck.
West Indian Whistling-duck
西印度树鸭是加勒比海地区特有的树鸭，主要分布于古巴、多明尼加、海地和巴哈马。以树为栖，常在红树林和棕榈林中栖息。体羽深褐色，腹部有黑色斑点，面部灰白色。以棕榈果实、水生植物和谷物为食。由于栖息地丧失和猎捕，被列为易危物种。