African Pygmy-goose vs Falkland Steamerduck
Nettapus auritus 比較対象 Tachyeres brachypterus
Side-by-Side Comparison
| 属性 | African Pygmy-goose | Falkland Steamerduck |
|---|---|---|
| 学名 | Nettapus auritus | Tachyeres brachypterus |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 29.9 cm (11.8 in) | 49.0 cm (19.3 in) |
| 体重 | 272.5 g (9.61 oz) | 3799.0 g (134.01 oz) |
| 食性 | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … | Eats seeds, sedge shoots, and aquatic invertebrates; dabbles in ponds and marshes; diet varies with … |
| 一腹卵数 | 6-12 | 4-12 |
| Population Trend | — | — |
Habitat Comparison
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.
Falkland Steamerduck
Exclusive to rocky coasts, sheltered coves, kelp beds, and sea inlets of the Falkland Islands. Flightless; strictly coastal. One of the few bird species entirely endemic to the Falkland Islands.
Song & Call Comparison
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.
Falkland Steamerduck
Similar to Magellanic Steamerduck in call quality — harsh, rattling, mechanical. Falkland Island birds' vocalizations adapted for stormy, windswept coastal habitat.
Geographic Range & Migration
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Falkland Steamerduck
Breeds in subarctic boreal ponds of Alaska and Canada; winters coastally from Alaska to California and on the Gulf Coast.
保全状況
African Pygmy-goose
Falkland Steamerduck
How to Tell Them Apart
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.
Falkland Steamerduck
Flightless; males gray with white supercilium and orange bill. Breast grayish-brown; flanks with brown mottling. Females brown with white eye-ring. Yellow-olive bill. Endemic to Falkland Islands.
About These Birds
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。
Falkland Steamerduck
フォークランドスティーマーダックはフォークランド諸島に固有の飛べないカモです。大きな体と短い翼が特徴で、水面を翼で漕いで移動します。沿岸の浅海、岩礁地帯に生息し、貝類、甲殻類、海藻を採食します。