Spotted Whistling-duck vs Red-breasted Merganser
Dendrocygna guttata 비교 대상 Mergus serrator
Side-by-Side Comparison
| 속성 | Spotted Whistling-duck | Red-breasted Merganser |
|---|---|---|
| 학명 | Dendrocygna guttata | Mergus serrator |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 41.3 cm (16.3 in) | 46.7 cm (18.4 in) |
| 체중 | 677.5 g (23.90 oz) | 1058.3333333333333 g (37.33 oz) |
| 식성 | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … | Dives for small fish, crustaceans, and aquatic invertebrates in coastal and freshwater habitats. Pursues fish … |
| 산란 수 | 10-11 | 6-14 |
| Population Trend | — | — |
Habitat Comparison
공유 서식지
Spotted Whistling-duck only
없음
Red-breasted Merganser only
없음
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.
Red-breasted Merganser
Male produces a harsh, rasping series of notes; female gives a rough, guttural grunting. The harsh, rattling call is louder than Goosander; pairs and flocks create a rasping coastal cacophony.
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.
Red-breasted Merganser
Circumpolar breeder in boreal and Arctic zones. Winters on coasts and large water bodies south to the Mediterranean and southern Asia.
보전 상태
Spotted Whistling-duck
Red-breasted 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.
Red-breasted Merganser
Male has dark green shaggy double crest, speckled chestnut breast band, white collar, and grey flanks; red bill. Female has rufous-brown head with ragged crest blending gradually into grey neck …
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.
Red-breasted Merganser
대형 물오리로 체장 52–58cm이며, 수컷은 광택 있는 초록 머리, 빨간 부리, 흰 목 고리, 갈색 가슴을 갖는다. 유라시아와 북아메리카의 해안, 강 하구, 호수에서 번식하고 해안에서 월동한다. 잠수하여 어류를 먹는다. 관심 필요 종이다.