Southern Pintail vs African Pygmy-goose
Anas eatoni 比較対象 Nettapus auritus
Side-by-Side Comparison
| 属性 | Southern Pintail | African Pygmy-goose |
|---|---|---|
| 学名 | Anas eatoni | Nettapus auritus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 40.6 cm (16.0 in) | 29.9 cm (11.8 in) |
| 体重 | 497.0 g (17.53 oz) | 272.5 g (9.61 oz) |
| 食性 | Dives for molluscs, crustaceans, and aquatic invertebrates; eats hard-shelled prey; diet shifts between freshwater and … | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … |
| 一腹卵数 | 2-6 | 6-12 |
| 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.
African Pygmy-goose
Freshwater lakes, ponds, and rivers with floating water lilies and other aquatic vegetation across sub-Saharan Africa from Senegal to Tanzania. Nests in tree cavities near water. Highly dependent on water lily vegetation.
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.
African Pygmy-goose
Male produces a soft, wheezy whistle; female gives a quiet, duck-like quack. Pairs exchange rapid twittering notes during courtship on lily-covered African pools.
Geographic Range & Migration
Southern Pintail
Breeds in Iceland and high-Arctic Norway; winters on the coasts of northwestern Europe and the British Isles.
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
保全状況
Southern Pintail
African Pygmy-goose
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.
African Pygmy-goose
Tiny. Males have glossy dark green head with orange facial patch and ear spot; chestnut-orange flanks; white underparts; black and green back. Females duller with dark eye-stripe. Small yellow-green bill.
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。
African Pygmy-goose
アフリカンピグミーグースはアフリカ南部と東部に分布する小型の木巣性カモです。雄の緑と栗色の美しい羽毛と小さなサイズが特徴的です。水草が豊富な湖や沼地に生息し、蓮や水草の種子を主食とします。木の洞に営巣します。