Southern Pintail vs Blue-billed Teal
Anas eatoni 比較対象 Spatula hottentota
Side-by-Side Comparison
| 属性 | Southern Pintail | Blue-billed Teal |
|---|---|---|
| 学名 | Anas eatoni | Spatula hottentota |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 40.6 cm (16.0 in) | 29.4 cm (11.6 in) |
| 体重 | 497.0 g (17.53 oz) | 269.2 g (9.50 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates; eats hard-shelled prey; diet shifts between freshwater and … | Feeds on seeds, aquatic plants, and invertebrates; filter-feeds in shallow water; broadly omnivorous and seasonally … |
| 一腹卵数 | 2-6 | 5-12 |
| Population Trend | — | — |
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.
Blue-billed Teal
Freshwater lakes, marshes, pans, and flooded grasslands across sub-Saharan Africa from Senegal and Sudan south to the Cape. Nomadic; follows seasonal rains. Common but easily overlooked among reed beds.
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.
Blue-billed Teal
Male utters a soft, teal-like peep; female gives a muted quack. Pairs call quietly in dense papyrus; soft contact calls help birds maintain proximity in thick African marsh vegetation.
Geographic Range & Migration
Southern Pintail
Breeds in Iceland and high-Arctic Norway; winters on the coasts of northwestern Europe and the British Isles.
Blue-billed Teal
Breeds in Arctic and subarctic Eurasia; winters at sea in the North Atlantic and from western Europe to eastern Africa.
保全状況
Southern Pintail
Blue-billed Teal
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.
Blue-billed Teal
Small; males have pale blue-gray bill contrasting with brown-gray body. Head finely spotted; underparts barred brown and white. Males show powder-blue forewing in flight. Females browner. African marsh species.
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。
Blue-billed Teal
A small dark teal with blue-grey bill and legs, brown-streaked plumage, and fine pale spotting on the flanks. The most widespread teal in sub-Saharan Africa. Found on freshwater lakes and marshes. Highly nomadic; follows seasonal rainfall. Swims low in the water like a pochard.