American Black Duck vs Falcated Duck
Anas rubripes 비교 대상 Mareca falcata
Side-by-Side Comparison
| 속성 | American Black Duck | Falcated Duck |
|---|---|---|
| 학명 | Anas rubripes | Mareca falcata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 53.4 cm (21.0 in) | 47.7 cm (18.8 in) |
| 체중 | 1211.25 g (42.73 oz) | 620.5 g (21.89 oz) |
| 식성 | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Eats seeds, plant material, and aquatic invertebrates; filter-feeds in shallow water; omnivorous diet varies with … |
| 산란 수 | 1-17 | 6-10 |
| 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.
Falcated Duck
Breeds along rivers and lake shores in Siberian taiga and meadows. Winters on freshwater lakes and rivers in China, Japan, and South Korea. Sensitive to hunting pressure and wetland drainage.
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.
Falcated Duck
Male gives a soft, whistled whi-ooo note; female produces a low, grunting quack. The male's haunting whistle is one of the more melodic sounds of East Asian wetlands in winter.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Falcated Duck
Nomadic across the interior wetlands of Australia; moves widely in response to flooding and drought conditions.
보전 상태
American Black Duck
Falcated 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 …
Falcated Duck
Males have iridescent green-and-chestnut head with bushy drooping crest. Pale gray body with black and white breast band. Long, sickle-shaped tertials overhang tail. Females mottled brown. Spectacular dimorphism.
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.
Falcated Duck
중간 크기의 오리로 체장 46–53cm이며, 수컷은 광택 있는 초록색과 청동색 머리에 긴 드리운 어깨 깃털을 갖는다. 동아시아 하천, 호수, 습지에 서식한다. 수생식물과 종자를 먹는다. 개체 수가 빠르게 감소하여 취약한 상태이다.