West Indian Whistling-duck vs Spotted Whistling-duck
Dendrocygna arborea 비교 대상 Dendrocygna guttata
Side-by-Side Comparison
| 속성 | West Indian Whistling-duck | Spotted Whistling-duck |
|---|---|---|
| 학명 | Dendrocygna arborea | Dendrocygna guttata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 51.3 cm (20.2 in) | 41.3 cm (16.3 in) |
| 체중 | 1030.0 g (36.33 oz) | 677.5 g (23.90 oz) |
| 식성 | Eats grasses, sedges, and grains; migratory goose foraging in Arctic tundra in summer; overwinters on … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 산란 수 | 4-16 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
공유 서식지
West Indian Whistling-duck only
Spotted Whistling-duck only
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.
Spotted Whistling-duck
Freshwater wetlands, rice fields, streams, and forest pools in New Guinea, Sulawesi, the Philippines, and Moluccas. Often found near forested rivers and seasonal swamps at low elevations.
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.
Spotted Whistling-duck
A musical, high whistle similar to other whistling-ducks. Call is softer and less far-carrying than White-faced or Black-bellied species. Given in flight and on water.
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.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
보전 상태
West Indian Whistling-duck
Spotted 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. …
Spotted Whistling-duck
Dark brown above; head and neck dark brown. Underparts heavily spotted white on dark brown ground, giving spotted appearance. Flanks with bold white spots. Pink-red bill and legs. 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.
Spotted Whistling-duck
옆구리에 굵은 흰 반점, 주황-붉은 부리와 다리, 엷은 얼굴을 가진 소형 어두운 갈색 홍따오기. 뉴기니·필리핀·인도네시아의 열대 습지에 서식. 종종 담수 개울과 침수 초원 근처에서 발견. 다른 홍따오기보다 덜 사회적.