Crested Duck vs Mallard
Lophonetta specularioides 比較対象 Anas platyrhynchos
Side-by-Side Comparison
| 属性 | Crested Duck | Mallard |
|---|---|---|
| 学名 | Lophonetta specularioides | Anas platyrhynchos |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | 58.0 cm (22.8 in) |
| 翼開長 | 53.8 cm (21.2 in) | 90.0 cm (35.4 in) |
| 体重 | 941.3833333333333 g (33.21 oz) | 1100.0 g (38.80 oz) |
| 食性 | Feeds on seeds and aquatic invertebrates; dabbles in ponds and marshes; diet more invertebrate-heavy in … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| 一腹卵数 | 5-8 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Crested Duck
Fast-flowing Andean rivers, lakes, and puna wetlands from sea level to 4,500 m in Peru, Bolivia, Chile, Argentina, and the Falkland Islands. Occupies both coastal and high-altitude wetland habitats.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Crested Duck
Produces a harsh, rattling call and loud hissing alarm notes. Both sexes vocalize with grating, nasal croaking sounds echoing across Andean rocky shores and rivers.
Mallard
Female gives the classic 'quack-quack-quack', descending in pitch. Male utters soft nasal 'raeb-raeb'. Both give a high 'gag-gag-gag' when alarmed or taking flight.
Geographic Range & Migration
Crested Duck
Breeds across Eurasia; winters in sub-Saharan Africa. One of the most abundant Palearctic ducks on the African wintering grounds.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
保全状況
Crested Duck
Mallard
How to Tell Them Apart
Crested Duck
Brown body with dark streaking; long pointed crest on hindcrown. Face and throat pale with dark eye patch. Iridescent purple-bronze speculum bordered white. Bill and legs grayish. Sexes similar. Andean …
Mallard
Breeding males have an iridescent green head, white neck ring, chestnut breast, and grey body. Females are mottled brown. Both sexes show a blue speculum bordered by white.
Broad, flat bill — yellow-green in males, orange-brown in females
About These Birds
Crested Duck
クレステッドダックは南米のアンデス山脈と南端のパタゴニアに分布するカモです。目の後ろの短い冠羽が特徴的です。高山の湖から南極近くの海岸まで幅広い環境に生息し、水草、藻類、無脊椎動物を採食します。
Mallard
世界で最も一般的なカモ。雄は光沢のある緑色の頭、白い首輪、栗色の胸が特徴。体長50〜65cm。ほぼ世界中の湖、川、池、湿地に生息。雑食性で植物や無脊椎動物を食べる。多くの家禽カモの祖先。低危険種。