White-faced Whistling-duck vs Mallard
Dendrocygna viduata 비교 대상 Anas platyrhynchos
Side-by-Side Comparison
| 속성 | White-faced Whistling-duck | Mallard |
|---|---|---|
| 학명 | Dendrocygna viduata | Anas platyrhynchos |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | 58.0 cm (22.8 in) |
| 날개 폭 | 42.9 cm (16.9 in) | 90.0 cm (35.4 in) |
| 체중 | 689.5 g (24.32 oz) | 1100.0 g (38.80 oz) |
| 식성 | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes eating saltmarsh grasses and … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| 산란 수 | 4-16 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
White-faced Whistling-duck
Freshwater lakes, marshes, rice paddies, flooded fields, and slow-moving rivers in sub-Saharan Africa and tropical South America. Tolerates a wide range of modified wetlands. Nomadic, following water availability.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
White-faced Whistling-duck
A clear, 3-syllable whistle 'wee-wee-WEE' — the origin of 'whistling-duck'. Given in noisy flocks during flight. Also gives a softer 'de-de-de' contact call on water.
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
White-faced Whistling-duck
Found in floodplains and wetlands of the Llanos in Venezuela and eastern Colombia. Sedentary and locally nomadic in wet savannas.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
보전 상태
White-faced Whistling-duck
Mallard
How to Tell Them Apart
White-faced Whistling-duck
Distinctive white face and throat contrasting with black hindneck. Breast chestnut; sides and flanks barred black and white. Back brown. Long gray legs. Sexes identical; upright whistling-duck posture.
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
White-faced Whistling-duck
눈에 띄는 흰 얼굴, 밤색 몸통, 줄무늬 옆구리, 독특한 세 음의 휘파람 소리를 가진 키 크고 우아하게 생긴 홍따오기. 사하라 이남 아프리카·남아메리카에 널리 분포. 담수 지점에 큰 소란스러운 무리를 이룬다. 매우 사회적; 집단으로 쉬고 둥지를 튼다.
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.