Spotted Whistling-duck vs Common Scoter
Dendrocygna guttata 비교 대상 Melanitta nigra
Side-by-Side Comparison
| 속성 | Spotted Whistling-duck | Common Scoter |
|---|---|---|
| 학명 | Dendrocygna guttata | Melanitta nigra |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 41.3 cm (16.3 in) | 44.2 cm (17.4 in) |
| 체중 | 677.5 g (23.90 oz) | 1127.25 g (39.76 oz) |
| 식성 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for bivalves, especially cockles, mussels, and clams, in shallow coastal seas. Also eats crustaceans … |
| 산란 수 | 10-11 | 6-8 |
| 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.
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.
Common Scoter
Male gives a soft, piping whistle; female produces a harsh, rasping call. The male's piping whistle is subtle; female's harsh calls dominate on European winter coasts and estuaries.
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.
Common Scoter
Breeds on moorland and boreal tundra from Iceland and Britain east to western Siberia. Winters on northwestern European coasts and the Baltic Sea.
보전 상태
Spotted Whistling-duck
Common 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.
Common Scoter
Male is entirely sooty black without white markings; orange-yellow patch on upper bill with small black knob. Female brownish-black above with contrasting pale cream cheeks and throat.
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.
Common Scoter
대형 해오리로 체장 43–54cm이며, 수컷은 전신이 검은색에 노란색 부리 혹을 갖는다. 유라시아 북부의 습지에서 번식하고 유럽 해안에서 월동한다. 잠수하여 연체동물, 갑각류, 수생 곤충을 먹는다. 관심 필요 종이다.