Meller's Duck vs Mute Swan
Anas melleri so với Cygnus olor
Side-by-Side Comparison
| Thuộc Tính | Meller's Duck | Mute Swan |
|---|---|---|
| Tên Khoa Học | Anas melleri | Cygnus olor |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Endangered | Least Concern |
| Chiều Dài | — | 152,0 cm (59.8 in) |
| Chiều Dài Sải Cánh | 49,1 cm (19.3 in) | 235,0 cm (92.5 in) |
| Khối Lượng | 1023,625 g (36.11 oz) | 11000,0 g (388.01 oz) |
| Chế Độ Ăn | Dives for fish and aquatic invertebrates in fast-flowing rivers; serrated bill grips slippery fish; diet … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| Số Trứng | 5-11 | 5-7 |
| 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.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
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.
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound 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.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Tình Trạng Bảo Tồn
Meller's Duck
Mute 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.
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
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.
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.