Black-bellied Whistling-duck vs Mallard
Dendrocygna autumnalis 对比 Anas platyrhynchos
Side-by-Side Comparison
| 属性 | Black-bellied Whistling-duck | Mallard |
|---|---|---|
| 学名 | Dendrocygna autumnalis | Anas platyrhynchos |
| 目 | Anseriformes | Anseriformes |
| 科 | Anatidae | Anatidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | 58.0 cm (22.8 in) |
| 翼展 | 48.2 cm (19.0 in) | 90.0 cm (35.4 in) |
| 体重 | 757.9 g (26.73 oz) | 1100.0 g (38.80 oz) |
| 食性 | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| 产卵数 | 9-18 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Black-bellied Whistling-duck
Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Black-bellied Whistling-duck
A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.
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
Black-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
保护状况
Black-bellied Whistling-duck
Mallard
How to Tell Them Apart
Black-bellied Whistling-duck
Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. Sexes similar.
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
Black-bellied Whistling-duck
黑腹树鸭是美洲热带的常见树鸭，分布于美国得克萨斯至阿根廷的广大地区。以腹部黑色为特征，嘴和腿部红色，体羽棕褐色，翼具宽白斑。常在树洞中营巢，以水生植物、种子和谷物为食，有时成群觅食于稻田。具有长腿特征，可在陆地上奔走。
Mallard
The mallard is the ancestor of most domestic duck breeds and the most abundant and widespread dabbling duck in the world. Males perform elaborate courtship displays including head-bobbing and whistle-grunt calls. Mallards are highly adaptable, thriving in both wilderness and urban environments.