Hawaiian Goose vs Mandarin Duck
Branta sandvicensis 비교 대상 Aix galericulata
Side-by-Side Comparison
| 속성 | Hawaiian Goose | Mandarin Duck |
|---|---|---|
| 학명 | Branta sandvicensis | Aix galericulata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | 44.0 cm (17.3 in) |
| 날개 폭 | 72.8 cm (28.7 in) | 70.0 cm (27.6 in) |
| 체중 | 2150.0 g (75.84 oz) | 570.0 g (20.11 oz) |
| 식성 | Eats aquatic plants, algae, and grasses; upends in shallow water to graze submerged vegetation; diet … | Seeds, acorns, grains, aquatic plants, insects, snails, and small fish. Forages by dabbling, walking, and … |
| 산란 수 | 1-6 | 7-14 |
| 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.
Mandarin Duck
Wooded lakes, rivers, and ponds surrounded by dense forest. Unlike most ducks, regularly perches in trees and nests in tree cavities.
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.
Mandarin Duck
Male gives a low whistled 'hib' or 'weep'. Female utters a soft quacking 'kek'. Generally quiet and secretive. No loud territorial song; vocalizations subtle and brief.
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.
Mandarin Duck
Native to East Asia including eastern Russia, China, Japan, and Korea. Feral populations established in Britain and western Europe.
보전 상태
Hawaiian Goose
Mandarin Duck
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 …
Mandarin Duck
Breeding males have an elaborate pattern of orange, green, white, and purple with distinctive orange sail feathers on the back. Females are grey-brown with a white eye-ring and stripe.
Small red bill in breeding males, pinkish 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.
Mandarin Duck
중간 크기의 아름다운 오리로 체장 41–49cm이며, 수컷은 오렌지색 볏, 녹색과 보라색 관, 흰색 눈썹, 청동색 옆구리가 화려하게 어우러진 깃털을 갖는다. 동아시아 산지 숲 속 호수와 하천에 서식하며, 유럽과 북아메리카에도 도입되었다. 견과류, 씨앗, 수생식물을 먹는다. 관심 필요 종이다.