American Black Duck vs Orinoco Goose
Anas rubripes 비교 대상 Neochen jubata
Side-by-Side Comparison
| 속성 | American Black Duck | Orinoco Goose |
|---|---|---|
| 학명 | Anas rubripes | Neochen jubata |
| 목 | Anseriformes | Anseriformes |
| 과 | Anatidae | Anatidae |
| 보전 상태 | Least Concern | Near Threatened |
| 체장 | — | — |
| 날개 폭 | 53.4 cm (21.0 in) | 59.6 cm (23.5 in) |
| 체중 | 1211.25 g (42.73 oz) | 1558.0 g (54.96 oz) |
| 식성 | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Eats grasses, seeds, and aquatic invertebrates; grazes wetland margins; takes molluscs and crustaceans in shallow … |
| 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.
Orinoco Goose
Tropical rivers, river islands, sandy beaches, and adjacent gallery forest in the Amazon and Orinoco basins. Nests in tree cavities or on the ground near rivers. Associated with braided river channels.
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.
Orinoco Goose
A nasal 'honk-honk' call. Less frequently encountered than other South American waterfowl; calls from gallery forest beside major Orinoco tributaries during the breeding season.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Orinoco Goose
Bred on Amsterdam Island and possibly other sub-Antarctic islets. Extinct; flightless and confined to one small island.
보전 상태
American Black Duck
Orinoco Goose
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 …
Orinoco Goose
Pale cream-buff head and neck; chestnut-brown breast and flanks. Back dark brown; belly pale cream. Wings with iridescent green speculum and white inner secondaries. Bill dark; legs reddish-orange. Sexes similar.
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.
Orinoco Goose
A pale-headed chestnut-and-white goose-like bird with a narrow dark mane on the neck. Found on tropical river islands and forest-edge wetlands of the Amazon and Orinoco basins. Perches prominently in trees. Monogamous with strong territorial behavior.