African Pygmy-goose vs Paradise Shelduck
Nettapus auritus 比較対象 Tadorna variegata
Side-by-Side Comparison
| 属性 | African Pygmy-goose | Paradise Shelduck |
|---|---|---|
| 学名 | Nettapus auritus | Tadorna variegata |
| 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) | 70.2 cm (27.6 in) |
| 体重 | 272.5 g (9.61 oz) | 1569.5 g (55.36 oz) |
| 食性 | Filter-feeds on invertebrates and seeds; dabbles in shallow ponds; diet more plant-based outside spring breeding … | Eats seeds, grasses, and aquatic invertebrates; grazes near water; dabbles in shallows; diet varies with … |
| 一腹卵数 | 6-12 | 5-15 |
| 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.
Paradise Shelduck
Open farmland, grassland, lake shores, riverbeds, and wetlands throughout both main islands of New Zealand. Nests in caves, burrows, hollow trees, and dense vegetation. Highly territorial in the breeding season.
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.
Paradise Shelduck
Male gives a high-pitched whistle; female gives a loud, harsh cackling call 'rak-rak-rak'. New Zealand's only endemic shelduck; calls echoing in open farmland are distinctive.
Geographic Range & Migration
African Pygmy-goose
Breeds across temperate to sub-Arctic Eurasia; winters in Africa, South Asia, and Southeast Asia.
Paradise Shelduck
Breeds in Eurasia from the UK to Siberia; winters across sub-Saharan Africa and the Indian subcontinent.
保全状況
African Pygmy-goose
Paradise Shelduck
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.
Paradise Shelduck
Extreme dimorphism. Males have black head with green gloss and black-and-chestnut body. Females have pure white head and neck contrasting with rich chestnut-rufous body. Both show white wing patches. New …
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。
Paradise Shelduck
ニュージーランドシェルダックはニュージーランド固有のカモです。雌は白い頭部と橙色の体が特徴的で、雌の方が派手な色彩を持つ珍しい種です。湖、川、湿地、農地に生息し、草、種子、無脊椎動物を採食します。