Spotted Whistling-duck vs Scaly-sided Merganser
Dendrocygna guttata 비교 대상 Mergus squamatus
Side-by-Side Comparison
| 속성 | Spotted Whistling-duck | Scaly-sided Merganser |
|---|---|---|
| 학명 | Dendrocygna guttata | Mergus squamatus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Endangered |
| 체장 | — | — |
| 날개 폭 | 41.3 cm (16.3 in) | 51.2 cm (20.2 in) |
| 체중 | 677.5 g (23.90 oz) | 1145.8 g (40.42 oz) |
| 식성 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for fish in fast-flowing East Asian rivers. Endangered; highly piscivorous with serrated bill adapted … |
| 산란 수 | 10-11 | 4-14 |
| Population Trend | — | — |
Habitat Comparison
공유 서식지
Spotted Whistling-duck only
Scaly-sided Merganser only
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
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.
Scaly-sided Merganser
Male gives a quiet, low grunting call; female produces a guttural, croaking series. Endangered; calls are poorly known; similar to Red-breasted Merganser but quieter in Manchurian forest rivers.
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.
Scaly-sided Merganser
Breeds in southern Russia, northern China, and the Russian Far East. Winters in southern China and Korea. Found on fast-flowing forested rivers.
보전 상태
Spotted Whistling-duck
Scaly-sided Merganser
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.
Scaly-sided Merganser
Male has iridescent dark green head with long flat crest, white body with distinctive black scaly pattern on flanks, and black back with white patches. Female has brownish-red crested head …
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.
Scaly-sided Merganser
대형 물오리로 체장 약 58cm이며, 수컷은 광택 있는 녹색 머리에 비늘 모양 가슴 무늬와 빨간 부리를 갖는다. 중국, 러시아 극동, 한국의 맑은 강과 계류에 서식하는 동아시아 고유종이다. 잠수하여 어류를 먹는다. 위기에 처한 상태이다.