Black Swan vs Maccoa Duck
Cygnus atratus so với Oxyura maccoa
Side-by-Side Comparison
| Thuộc Tính | Black Swan | Maccoa Duck |
|---|---|---|
| Tên Khoa Học | Cygnus atratus | Oxyura maccoa |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Least Concern | Endangered |
| Chiều Dài | 130,0 cm (51.2 in) | — |
| Chiều Dài Sải Cánh | 190,0 cm (74.8 in) | 31,3 cm (12.3 in) |
| Khối Lượng | 6200,0 g (218.70 oz) | 685,3333333333334 g (24.17 oz) |
| Chế Độ Ăn | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … | Dives for aquatic invertebrates and plant seeds in African lakes and marshes. Uses lobed feet … |
| Số Trứng | 4-6 | 4-12 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Black Swan
Gives a musical bugling 'boo-boo-boo' in flight and softer honking on water. Less vocal than Mute Swan; produces a baying call when alarmed. Wings whistle softly in flight.
Maccoa Duck
Male emits a rapid, staccato drumming display; female gives a harsh, emphatic quack. The drumming call is powerful and diagnostic; this endangered southern African stiff-tail displays at dawn.
Geographic Range & Migration
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Maccoa Duck
Resident in eastern and southern Africa from Ethiopia and Kenya south to the Cape. Found on lakes and marshes with dense aquatic vegetation.
Tình Trạng Bảo Tồn
Black Swan
Maccoa Duck
How to Tell Them Apart
Black Swan
Almost entirely black with white flight feathers visible in flight. Red bill with a white band near the tip. Dark red to reddish-brown iris.
Bright red bill with a pale tip and prominent white band
Maccoa Duck
Male has glossy black head, deep chestnut-red body, and vivid sky-blue bill; stiff tail often cocked. Female is dark brown above with streaked buff below and two pale facial stripes …
About These Birds
Black Swan
The black swan was once considered impossible by Europeans who believed all swans were white, making it a famous philosophical example of inductive reasoning failure. It is the state emblem of Western Australia. Black swans form lifelong pair bonds and both parents share in incubation and care of cygnets.
Maccoa Duck
A stiff-tailed diving duck (~685 g) of sub-Saharan Africa, family Anatidae, males chestnut-bodied with a blue bill. Inhabits large, deep freshwater lakes and dams in eastern and southern Africa. Dives for aquatic invertebrates and vegetation. Endangered due to small, fragmented populations, habitat loss from wetland drainage, and competition with introduced species.