Southern Pintail vs Mute Swan
Anas eatoni 比較対象 Cygnus olor
Side-by-Side Comparison
| 属性 | Southern Pintail | Mute Swan |
|---|---|---|
| 学名 | Anas eatoni | Cygnus olor |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | 152.0 cm (59.8 in) |
| 翼開長 | 40.6 cm (16.0 in) | 235.0 cm (92.5 in) |
| 体重 | 497.0 g (17.53 oz) | 11000.0 g (388.01 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates; eats hard-shelled prey; diet shifts between freshwater and … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| 一腹卵数 | 2-6 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Southern Pintail
Restricted to the sub-Antarctic Kerguelen and Crozet archipelagos. Inhabits freshwater streams, ponds, and coastal wetlands. Largely terrestrial for a duck; forages on land among tussock grasses.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Southern Pintail
Female produces a quiet, nasal quacking; male gives a soft whistle. Subdued vocalizations suit this sub-Antarctic island duck; calls are seldom heard and rarely documented.
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
Southern Pintail
Breeds in Iceland and high-Arctic Norway; winters on the coasts of northwestern Europe and the British Isles.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
保全状況
Southern Pintail
Mute Swan
How to Tell Them Apart
Southern Pintail
Brown, mottled plumage; head brown with pale cheeks. Pointed tail; males slightly longer-tailed. Grayish bill. Speculum bronze-green. Sexes similar with modest dimorphism. Subantarctic island endemic; two subspecies.
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
Southern Pintail
ケルゲレンティールはインド洋南部のケルゲレン島とクロゼット島に固有のカモです。マガモから進化した島嶼種で、翼が退化し飛行能力が低下しています。島の淡水池や渓流に生息し、無脊椎動物や植物を採食します。外来種の捕食者の導入前は個体数が多かったです。
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.