Mute Swan vs Rosy-billed Pochard
Cygnus olor 对比 Netta peposaca
Side-by-Side Comparison
| 属性 | Mute Swan | Rosy-billed Pochard |
|---|---|---|
| 学名 | Cygnus olor | Netta peposaca |
| 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) | 46.1 cm (18.1 in) |
| 体重 | 11000.0 g (388.01 oz) | 1103.4 g (38.92 oz) |
| 食性 | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow coastal water; diet dominated by invertebrates. |
| 产卵数 | 5-7 | 10 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Rosy-billed Pochard
Freshwater lakes, marshes, and lagoons in southern South America from central Brazil through Bolivia, Uruguay, and Argentina to Patagonia. Often on large open lakes. Partially migratory; moves northward in winter.
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.
Rosy-billed Pochard
Male gives a deep, burping boom; female produces a loud, grunting quack. The male's resonant booming call during display is among the most powerful calls of South American wildfowl.
Geographic Range & Migration
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Rosy-billed Pochard
Breeds in northern prairies; winters on interior wetlands and coasts from the southern US to Central America.
保护状况
Mute Swan
Rosy-billed Pochard
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
Rosy-billed Pochard
Males dark sooty-black with iridescent purple gloss on head; bright rosy-red bill with pink knob. White flanks visible when at rest. Females brown with pale face and gray bill. Bold …
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.
Rosy-billed Pochard
华美潜鸭是南美洲的大型潜鸭，雄鸟嘴部鲜红色基部具明亮的橙白色疣突，头部黑色，体羽黑白相间，十分醒目；雌鸟褐色，嘴部灰色。分布于阿根廷、智利、乌拉圭和巴西南部的湖泊和沼泽。以水生植物为食，是南美洲最具特色的潜鸭之一。