Black-bellied Whistling-duck vs Mallard
Dendrocygna autumnalis 비교 대상 Anas platyrhynchos
Side-by-Side Comparison
| 속성 | Black-bellied Whistling-duck | Mallard |
|---|---|---|
| 학명 | Dendrocygna autumnalis | Anas platyrhynchos |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | 58.0 cm (22.8 in) |
| 날개 폭 | 48.2 cm (19.0 in) | 90.0 cm (35.4 in) |
| 체중 | 757.9 g (26.73 oz) | 1100.0 g (38.80 oz) |
| 식성 | 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 … |
| 산란 수 | 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.
보전 상태
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
밝은 붉은 부리, 밤색-검은색 몸통, 넓은 흰 날개 줄무늬, 특유의 휘파람 소리 울음을 가진 뚜렷한 무늬의 홍따오기. 미국 남부에서 남아메리카 중부까지 담수 습지에서 흔하다. 나무 구멍에 둥지를 튼다. 종종 나무에 횃대를 잡는데—물새로서는 이례적.
Mallard
가장 잘 알려진 야생 오리로 체장 50–65cm이며, 수컷은 광택 있는 녹색 머리와 노란 부리, 자주빛 갈색 가슴, 흰색 목 고리를 갖는다. 북반구 전역과 호주에 귀화하여 온대 내지 아열대 습지, 호수, 강, 도시 공원에 서식한다. 잡식성으로 식물, 곤충, 작은 어류를 먹는다. 관심 필요 종이다.