Spotted Whistling-duck vs White-winged Scoter
Dendrocygna guttata 비교 대상 Melanitta deglandi
Side-by-Side Comparison
| 속성 | Spotted Whistling-duck | White-winged Scoter |
|---|---|---|
| 학명 | Dendrocygna guttata | Melanitta deglandi |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 41.3 cm (16.3 in) | 54.0 cm (21.3 in) |
| 체중 | 677.5 g (23.90 oz) | 1647.1666666666667 g (58.10 oz) |
| 식성 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for molluscs, crustaceans, and small fish in coastal and inland waters. Favours mussels and … |
| 산란 수 | 10-11 | 6-16 |
| Population Trend | — | — |
Habitat Comparison
공유 서식지
Spotted Whistling-duck only
White-winged Scoter 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.
White-winged Scoter
Male produces a soft, whistled note; female gives a harsh, grating call. Similar to Velvet Scoter; the female's rasping call carries across North Pacific bays and coastal inlets.
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.
White-winged Scoter
Breeds in boreal forest and tundra of interior North America. Winters along Pacific and Atlantic coasts south to California and the Gulf states.
보전 상태
Spotted Whistling-duck
White-winged Scoter
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.
White-winged Scoter
Male is black with conspicuous white secondaries and a white comma-shaped mark below eye; orange-yellow bill with black basal knob. Female dark brownish-black with two pale facial patches and white …
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.
White-winged Scoter
대형 해오리로 체장 51–58cm이며, 수컷은 전신이 검은색에 흰 눈 반점과 노란색 혹이 있는 오렌지색 부리를 갖는다. 북아메리카 내륙 습지에서 번식하고 태평양 해안에서 월동한다. 잠수하여 연체동물과 갑각류를 먹는다. 관심 필요 종이다.