Mute Swan vs Masked Duck
Cygnus olor 对比 Nomonyx dominicus
Side-by-Side Comparison
| 属性 | Mute Swan | Masked Duck |
|---|---|---|
| 学名 | Cygnus olor | Nomonyx dominicus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 152.0 cm (59.8 in) | — |
| 翼展 | 235.0 cm (92.5 in) | 27.6 cm (10.9 in) |
| 体重 | 11000.0 g (388.01 oz) | 361.0 g (12.73 oz) |
| 食性 | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … | Dives and dabbles for aquatic seeds, plant matter, and invertebrates in freshwater marshes and ponds … |
| 产卵数 | 5-7 | 4-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
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.
Masked Duck
Male emits a soft, dove-like cooing note; female gives a harsh, emphatic quack. The male's gentle, almost melodic cooing is surprising for a stiff-tail; heard in tropical American marshes.
Geographic Range & Migration
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Masked Duck
Resident from Mexico and the Caribbean south through Central America to northern South America. Found in lowland freshwater marshes and lagoons.
保护状况
Mute Swan
Masked Duck
How to Tell Them Apart
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
Masked Duck
Male is rich rufous-chestnut with black mask from forehead to face, boldly spotted black on upperparts; blue bill. Female is streaked buff and brown with two dark facial stripes crossing …
About These 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.
Masked Duck
斑背硬尾鸭是分布于南美洲和加勒比海的小型硬尾鸭，与北美草原硬尾鸭和黑头鸭同科。雄鸟头部黑色，背部棕红色有黑斑，尾羽长而硬挺；雌鸟褐色较暗淡。栖息于淡水湖泊和沼泽，善深潜，以水生植物、种子和水生昆虫为食。