African Black Duck vs Pink-headed Duck
Anas sparsa so với Rhodonessa caryophyllacea
Side-by-Side Comparison
| Thuộc Tính | African Black Duck | Pink-headed Duck |
|---|---|---|
| Tên Khoa Học | Anas sparsa | Rhodonessa caryophyllacea |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Least Concern | Critically Endangered |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 49,5 cm (19.5 in) | 50,2 cm (19.8 in) |
| Khối Lượng | 996,8333333333334 g (35.16 oz) | 963,8 g (34.00 oz) |
| Chế Độ Ăn | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet heavier in … | Probably extinct; fed on fish, molluscs, and aquatic invertebrates in Indian subcontinent wetlands; diet recorded … |
| Số Trứng | 4-9 | 5-10 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
African Black Duck only
Pink-headed Duck 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.
Pink-headed Duck
Historically inhabited secluded freshwater pools, lakes, and marshes in tall grass and forest in the Ganges and Brahmaputra plains of India, Nepal, and Myanmar. Now possibly extinct or extremely rare.
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.
Pink-headed Duck
Critically Endangered; likely gives a soft, resonant quacking note judging from close relatives. The Pink-headed Duck may have produced a distinctive, mellow whistle unlike other pochards.
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.
Pink-headed Duck
Breeds in the northern prairies of Canada and US; winters in the Gulf Coast and along the Atlantic coast south to Florida.
Tình Trạng Bảo Tồn
African Black Duck
Pink-headed 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 …
Pink-headed Duck
Unmistakable; males have strikingly bright pink head and neck contrasting with dark chocolate-brown body and wings. Pink bill. Females have paler pink head. Possibly extinct; last confirmed 1949. Critically endangered …
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.
Pink-headed Duck
Possibly extinct; a distinctive large diving duck formerly found in the Ganges plains of India and Myanmar. Males had a deep pink head and neck contrasting with dark chocolate-brown body. Last confirmed sightings in the 1940s. One of Asia's greatest bird mysteries.