Chestnut Teal vs African Black Duck
Anas castanea 对比 Anas sparsa
Side-by-Side Comparison
| 属性 | Chestnut Teal | African Black Duck |
|---|---|---|
| 学名 | Anas castanea | Anas sparsa |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 40.4 cm (15.9 in) | 49.5 cm (19.5 in) |
| 体重 | 662.25 g (23.36 oz) | 996.8333333333334 g (35.16 oz) |
| 食性 | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow water; diet heavier in molluscs in … | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … |
| 产卵数 | 5-17 | 4-9 |
| Population Trend | — | — |
Habitat Comparison
Chestnut Teal
Coastal and estuarine wetlands, saltmarshes, estuaries, and coastal freshwater lakes in southeastern and southwestern Australia. More closely tied to coastal habitats than most Australian ducks.
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
Chestnut Teal
Female produces a loud, emphatic quacking series; male gives a high, whistled note. The female's resonant quacking call is a familiar sound of southern Australian coastal wetlands.
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.
Geographic Range & Migration
Chestnut Teal
Breeds in the north-central prairies; winters along the Atlantic and Gulf coasts of the United States.
African Black Duck
Resident across South and Southeast Asia, from India to southern China and the Philippines. Non-migratory in most of its range.
保护状况
Chestnut Teal
African Black Duck
How to Tell Them Apart
Chestnut Teal
Strong dimorphism. Males have iridescent dark green head; rich chestnut underparts with white flank patch. Brown back; dark undertail. Females mottled brown with pale face. Iridescent green speculum. Australian coastal.
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 …
About These Birds
Chestnut Teal
栗鸭（Anas castanea）是一种小型鸭，雄鸟头部具华丽虹彩绿色，体羽栗色，具绿色翼镜。属鸭科（Anatidae），特产于澳大利亚南部，分布于各类湿地，是澳大利亚最迷人的小型鸭之一。
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.