West Indian Whistling-duck vs Wandering Whistling-duck
Dendrocygna arborea 비교 대상 Dendrocygna arcuata
Side-by-Side Comparison
| 속성 | West Indian Whistling-duck | Wandering Whistling-duck |
|---|---|---|
| 학명 | Dendrocygna arborea | Dendrocygna arcuata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 51.3 cm (20.2 in) | 37.2 cm (14.6 in) |
| 체중 | 1030.0 g (36.33 oz) | 779.5 g (27.50 oz) |
| 식성 | Eats grasses, sedges, and grains; migratory goose foraging in Arctic tundra in summer; overwinters on … | Eats grasses, sedges, and aquatic plants in tundra; winter diet of coastal salt marsh grasses … |
| 산란 수 | 4-16 | 6-15 |
| Population Trend | — | — |
Habitat Comparison
공유 서식지
West Indian Whistling-duck only
Wandering Whistling-duck only
없음
West Indian Whistling-duck
Freshwater lakes, mangrove swamps, palm savannas, and forested wetlands in the Greater and Lesser Antilles. Nests in palm crowns and hollow trees. Highly dependent on Caribbean wet forests and freshwater lagoons.
Wandering Whistling-duck
Tropical freshwater marshes, flooded grasslands, swamps, and lake margins from the Philippines and Indonesia through Papua New Guinea to northern and eastern Australia. Nomadic following wet season flooding.
Song & Call Comparison
West Indian Whistling-duck
A loud, 3-syllable whistle 'whee-whee-whee'. The NT conservation status reflects population pressures. Less commonly heard than its more abundant whistling-duck relatives.
Wandering Whistling-duck
A soft whistle 'whi-whi-whi' in flight. Less vocal than other whistling-ducks; flocks tend to be quieter. Given at dawn and dusk during flight to roosting or feeding areas.
Geographic Range & Migration
West Indian Whistling-duck
Found in grassy wetlands and floodplains of Madagascar. Non-migratory and endemic to the island's eastern marshes.
Wandering Whistling-duck
Breeds in Arctic and subarctic regions; winters at sea around the Antarctic pack ice, one of the longest migrations known.
보전 상태
West Indian Whistling-duck
Wandering Whistling-duck
How to Tell Them Apart
West Indian Whistling-duck
Dark brown upperparts; head and neck dark with pale sides. Flanks black with bold white spots. Breast dark brown; belly blackish with white flank streaks. Long dark legs. Largest Dendrocygna. …
Wandering Whistling-duck
Rich chestnut-brown head and neck; dark brown back. Flanks rufous with pale buff streaks and dark spots. Belly blackish. Long, dark pinkish legs. Upright posture typical of whistling-ducks. Sexes similar.
About These Birds
West Indian Whistling-duck
갈색·검은색 깃털, 엷은 얼굴, 어두운 줄무늬의 밤색 아랫면을 가진 대형 어두운 홍따오기. 카리브 해 고유종. 서인도 제도 최대 토착 오리; 사냥·서식지 손실로 취약종으로 등재. 야자나무와 삼림 나무에 집단으로 쉰다.
Wandering Whistling-duck
황갈색-갈색 몸통, 어두운 갈색 등, 엷은 황갈색 아랫면, 밤색 목깃을 가진 중형 홍따오기. 인도네시아에서 호주·태평양 섬까지 열대 습지에 서식. 매우 사회적이고 유목성. 얕은 담수에서 수면 채이기와 잠수로 채이며 먹이를 구한다.