Blue-winged Goose vs Spotted Whistling-duck
Cyanochen cyanoptera 비교 대상 Dendrocygna guttata
Side-by-Side Comparison
| 속성 | Blue-winged Goose | Spotted Whistling-duck |
|---|---|---|
| 학명 | Cyanochen cyanoptera | Dendrocygna guttata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 65.2 cm (25.7 in) | 41.3 cm (16.3 in) |
| 체중 | 1796.25 g (63.36 oz) | 677.5 g (23.90 oz) |
| 식성 | Eats aquatic plants, seeds, and invertebrates; dabbles in shallow ponds; diet shifts toward invertebrates in … | Primarily herbivorous; grazes tundra grasses and sedges; winters on coastal marshes and farmland, switching to … |
| 산란 수 | 4-12 | 10-11 |
| Population Trend | — | — |
Habitat Comparison
Blue-winged Goose
Alpine and subalpine grasslands, riverbanks, and marshy meadows at 2,800–4,200 m on the Ethiopian Highlands. Grazes along stream and river margins. Strongly tied to highland wetlands near cold mountain streams.
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
Blue-winged Goose
A soft, nasal bleating call from Ethiopian highland wetlands. The NT status and restricted Afroalpine range mean vocalizations are poorly documented in systematic detail.
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.
Geographic Range & Migration
Blue-winged Goose
Breeds in northern prairie wetlands; winters along the Atlantic and Gulf coasts of the United States.
Spotted Whistling-duck
Ranges widely across sub-Saharan Africa in open woodland and savanna. Largely sedentary with local seasonal movements to water.
보전 상태
Blue-winged Goose
Spotted Whistling-duck
How to Tell Them Apart
Blue-winged Goose
Mostly dull gray-brown; head paler gray. Distinctive pale blue wing patch conspicuous in flight. Underparts slightly paler. Bill and legs pinkish-gray. Sexes similar. Endemic to Ethiopian highlands.
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.
About These Birds
Blue-winged Goose
비행 시 특유의 엷은 청회색 날개 반점이 보이는 중형 회갈색 기러기 유사 오리. 에티오피아 고원 고유종. 산악 하천 인근 짧은 풀밭에서 풀을 뜯는다. 단혼성; 쌍은 영구적이다. 농업 집약화와 과도한 방목으로 위협받는다.
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.