Meller's Duck vs Black Swan
Anas melleri so với Cygnus atratus
Side-by-Side Comparison
| Thuộc Tính | Meller's Duck | Black Swan |
|---|---|---|
| Tên Khoa Học | Anas melleri | Cygnus atratus |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Endangered | Least Concern |
| Chiều Dài | — | 130,0 cm (51.2 in) |
| Chiều Dài Sải Cánh | 49,1 cm (19.3 in) | 190,0 cm (74.8 in) |
| Khối Lượng | 1023,625 g (36.11 oz) | 6200,0 g (218.70 oz) |
| Chế Độ Ăn | Dives for fish and aquatic invertebrates in fast-flowing rivers; serrated bill grips slippery fish; diet … | Aquatic vegetation and algae, supplemented with grain and pasture grasses. Feeds by upending in shallow … |
| Số Trứng | 5-11 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Meller's Duck
Freshwater lakes, marshes, rivers, and rice paddies in the eastern highlands and north of Madagascar. Prefers undisturbed native forest wetlands. Endangered by hunting and habitat conversion.
Black Swan
Lakes, rivers, swamps, and coastal waters across Australia. Also found in ornamental lakes in parks.
Song & Call Comparison
Meller's Duck
Female produces a loud, resonant quacking sequence; male gives a soft, nasal grunt. This large Malagasy duck vocalizes with powerful quacking calls along forest rivers and marshes.
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.
Geographic Range & Migration
Meller's Duck
Resident in wetlands and lakes from Turkey and Egypt through East Africa to the Cape. Non-migratory and widely distributed.
Black Swan
Australia, primarily in the southeast and southwest. Introduced populations in New Zealand, Japan, and western Europe.
Tình Trạng Bảo Tồn
Meller's Duck
Black Swan
How to Tell Them Apart
Meller's Duck
Dark brown-olive plumage streaked and mottled with pale buff; resembles large dark Mallard without green head. Iridescent green speculum with white borders. Yellow-brown bill; orange legs. Madagascar endemic.
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
About These Birds
Meller's Duck
A large brown dabbling duck resembling a female Mallard but larger, with green iridescent speculum and orange bill. Endemic to Madagascar. Endangered; threatened by hunting and wetland loss. One of Madagascar's rarest 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.