Hawaiian Goose vs Mallard
Branta sandvicensis 비교 대상 Anas platyrhynchos
Side-by-Side Comparison
| 속성 | Hawaiian Goose | Mallard |
|---|---|---|
| 학명 | Branta sandvicensis | Anas platyrhynchos |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | 58.0 cm (22.8 in) |
| 날개 폭 | 72.8 cm (28.7 in) | 90.0 cm (35.4 in) |
| 체중 | 2150.0 g (75.84 oz) | 1100.0 g (38.80 oz) |
| 식성 | Eats aquatic plants, algae, and grasses; upends in shallow water to graze submerged vegetation; diet … | Omnivorous — aquatic plants, seeds, insects, crustaceans, and mollusks. Feeds by dabbling, upending, and grazing … |
| 산란 수 | 1-6 | 4-18 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Hawaiian Goose
Volcanic slopes, lava flows, coastal grasslands, and shrublands on Maui, Hawai'i, and Kauai. Adapted to rocky terrain with reduced toe webbing. Introduced to other Hawaiian islands. Avoids dense forest.
Mallard
Nearly any wetland habitat including lakes, rivers, ponds, marshes, estuaries, and urban park ponds.
Song & Call Comparison
Hawaiian Goose
A soft, low 'moo-moo' — the murmuring call gives the Nene its Hawaiian name. Also gives honking calls in flight. Less vocal than Canada Goose; distinctive murmuring quality.
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 Goose
Breeds in sub-Arctic Canada; winters on large lakes and rivers from the Gulf of Mexico north to where water remains open.
Mallard
Native across the Northern Hemisphere in North America, Europe, and Asia. Introduced to Australia and New Zealand.
보전 상태
Hawaiian Goose
Mallard
How to Tell Them Apart
Hawaiian Goose
Buff-tan neck with black and white channeled furrows. Crown and face black; hindneck black. Body gray-brown above; underparts pale with buff breast. Reduced webbing on feet. Sexes similar. State bird …
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 Goose
하와이의 주 새이자 거의 멸종 직전에서 회복된 세계에서 가장 희귀한 기러기입니다. 검은 얼굴, 대각선 줄무늬가 있는 연한 황갈색 목, 용암을 걷기 위해 적응된 물갈퀴가 줄어든 발을 가진 중간 크기 갈색 기러기입니다. 화산 사면과 해안 지역에서 풀을 먹습니다.
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.