Mallard vs Lake Duck
Anas platyrhynchos 比較対象 Oxyura vittata
Side-by-Side Comparison
| 属性 | Mallard | Lake Duck |
|---|---|---|
| 学名 | Anas platyrhynchos | Oxyura vittata |
| 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 | 90.0 cm (35.4 in) | 27.6 cm (10.9 in) |
| 体重 | 1100.0 g (38.80 oz) | 665.0 g (23.46 oz) |
| 食性 | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … | Dives for aquatic invertebrates and plant seeds in South American freshwater lakes and marshes. Feeds … |
| 一腹卵数 | 4-18 | 3-5 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
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.
Lake Duck
Male produces a mechanical, drumming staccato call; female gives a soft, nasal quack. Drumming display resembles other Oxyura stiff-tails; heard at dawn on Andean and Patagonian lakes.
Geographic Range & Migration
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
Lake Duck
Resident in southern South America from central Chile and central Argentina south to Tierra del Fuego. Found on lowland lakes and lagoons.
保全状況
Mallard
Lake Duck
How to Tell Them Apart
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
Lake Duck
Male is dark chestnut-brown with black head, pale whitish-grey cheeks, and cobalt-blue bill. Female is brownish-buff with streaked upperparts and a distinctive pale supercilium; undertail coverts whitish.