American Black Duck vs White-backed Duck
Anas rubripes 비교 대상 Thalassornis leuconotus
Side-by-Side Comparison
| 속성 | American Black Duck | White-backed Duck |
|---|---|---|
| 학명 | Anas rubripes | Thalassornis leuconotus |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 53.4 cm (21.0 in) | 33.3 cm (13.1 in) |
| 체중 | 1211.25 g (42.73 oz) | 704.6666666666666 g (24.86 oz) |
| 식성 | -- | -- |
| 산란 수 | 1-17 | 4-10 |
| Population Trend | — | — |
Habitat Comparison
American Black Duck
Freshwater and brackish wetlands in eastern North America from Atlantic Canada south along the coast to Georgia. Breeds in northern bogs and wetlands. Winters on coastal marshes, estuaries, and freshwater lakes.
White-backed Duck
Freshwater lakes, ponds, and swamps with abundant floating aquatic vegetation, especially water lilies, in sub-Saharan Africa and Madagascar. Prefers shallow sheltered water with emergent vegetation for cover.
Song & Call Comparison
American Black Duck
Female produces a loud, deep quacking series; male gives a low, raspy grunt. Voice is deeper and huskier than a Mallard; pairs call powerfully across northeastern North American wetlands.
White-backed Duck
Soft, low whistles and hissing sounds. The White-backed Duck is relatively quiet compared to whistling-ducks. Alarm call is a low 'peep'. Mostly heard at night.
보전 상태
American Black Duck
White-backed Duck
How to Tell Them Apart
American Black Duck
Sooty dark brown body; head and neck paler buff with dark streaking. Iridescent purple speculum without white border. Males have yellow-green bill; females olive with orange blotches. Silvery underwings in …
White-backed Duck
Heavily mottled and barred brown and buff overall. Diagnostic white back patch visible in flight. Head brown with whitish face and chin. Stiff tail held erect. Sexes similar; stiff-tail diving …
About These Birds
American Black Duck
아메리카 검정 오리는 북아메리카 동부에 서식하는 중간 크기의 오리로, 말라드와 매우 유사하지만 전체적으로 더 어둡고 뚜렷한 보라색 날개 거울을 가지고 있습니다.
White-backed Duck
흰등오리는 사하라 이남 아프리카와 마다가스카르의 습지에 서식하는 독특한 잠수 오리입니다. 갈색 줄무늬 깃털과 흰 등, 특이한 납작한 부리가 특징이며, 수생 식물이 무성한 얕은 연못과 호수에 서식합니다.