Spotted Whistling-duck vs Falcated Duck
Dendrocygna guttata 비교 대상 Mareca falcata
Side-by-Side Comparison
| 속성 | Spotted Whistling-duck | Falcated Duck |
|---|---|---|
| 학명 | Dendrocygna guttata | Mareca falcata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 41.3 cm (16.3 in) | 47.7 cm (18.8 in) |
| 체중 | 677.5 g (23.90 oz) | 620.5 g (21.89 oz) |
| 식성 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Eats seeds, plant material, and aquatic invertebrates; filter-feeds in shallow water; omnivorous diet varies with … |
| 산란 수 | 10-11 | 6-10 |
| Population Trend | — | — |
Habitat Comparison
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.
Falcated Duck
Breeds along rivers and lake shores in Siberian taiga and meadows. Winters on freshwater lakes and rivers in China, Japan, and South Korea. Sensitive to hunting pressure and wetland drainage.
Song & Call Comparison
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.
Falcated Duck
Male gives a soft, whistled whi-ooo note; female produces a low, grunting quack. The male's haunting whistle is one of the more melodic sounds of East Asian wetlands in winter.
Geographic Range & Migration
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
Falcated Duck
Nomadic across the interior wetlands of Australia; moves widely in response to flooding and drought conditions.
보전 상태
Spotted Whistling-duck
Falcated Duck
How to Tell Them Apart
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.
Falcated Duck
Males have iridescent green-and-chestnut head with bushy drooping crest. Pale gray body with black and white breast band. Long, sickle-shaped tertials overhang tail. Females mottled brown. Spectacular dimorphism.
About These Birds
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.
Falcated Duck
중간 크기의 오리로 체장 46–53cm이며, 수컷은 광택 있는 초록색과 청동색 머리에 긴 드리운 어깨 깃털을 갖는다. 동아시아 하천, 호수, 습지에 서식한다. 수생식물과 종자를 먹는다. 개체 수가 빠르게 감소하여 취약한 상태이다.