Hawaiian Duck vs Mallard
Anas wyvilliana 비교 대상 Anas platyrhynchos
Side-by-Side Comparison
| 속성 | Hawaiian Duck | Mallard |
|---|---|---|
| 학명 | Anas wyvilliana | Anas platyrhynchos |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Vulnerable | Least Concern |
| 체장 | — | 58.0 cm (22.8 in) |
| 날개 폭 | 44.0 cm (17.3 in) | 90.0 cm (35.4 in) |
| 체중 | 573.25 g (20.22 oz) | 1100.0 g (38.80 oz) |
| 식성 | Fish-diving duck of South American rivers; uses serrated bill to catch fish and aquatic invertebrates; … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| 산란 수 | 9-13 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Hawaiian Duck
Freshwater marshes, rivers, reservoirs, and taro fields on Kauai and other Hawaiian islands. Nests in dense vegetation near water. Threatened by hybridization with domestic or feral Mallards.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Hawaiian Duck
Female produces a raspy, descending quacking series; male gives a soft, nasal sound. Calls similar to Mallard but higher-pitched; alarm is a rapid-fire quacking rattle.
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
Hawaiian Duck
Ranges across sub-Saharan Africa in open grasslands and wetland edges. Locally nomadic following seasonal rainfall patterns.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
보전 상태
Hawaiian Duck
Mallard
How to Tell Them Apart
Hawaiian Duck
Mottled brown plumage; males may show slight green gloss on head but reduced compared to Mallard. Iridescent blue-purple speculum with white borders. Orange bill. Females similar to males; pale buff …
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
Hawaiian Duck
하와이 오리 또는 콜로아 마올리는 하와이 제도에서만 서식하는 멸종위기종 오리입니다. 말라드와 형태학적으로 유사하지만 유전적으로 구별되며, 서식지 보호와 번식 프로그램이 진행 중입니다.
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.