American Black Duck vs Orinoco Goose
Anas rubripes comparado con Neochen jubata
Side-by-Side Comparison
| Atributo | American Black Duck | Orinoco Goose |
|---|---|---|
| Nombre científico | Anas rubripes | Neochen jubata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Near Threatened |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 59,6 cm (23.5 in) |
| Peso | 1211,25 g (42.73 oz) | 1558,0 g (54.96 oz) |
| Dieta | 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 … |
| Tamaño de la puesta | 1-17 | 6-10 |
| Population Trend | — | — |
Habitat Comparison
American Black Duck only
Orinoco Goose only
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.
Estado de conservación
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
El pato negro americano es un gran pato de color marrón muy oscuro con una cabeza más clara y un llamativo espéculo alar púrpura. Habita en humedales del este de Norteamérica y se está hibridando cada vez más con el pato de collar introducido en su rango, lo que representa una amenaza para su pureza genética. Prefiere marismas costeras, pantanos boscosos y lagos tranquilos.
Orinoco Goose
La orinoquense o ganso del Orinoco es un ganso de América del Sur con la cabeza y el cuello de color canela claro y el cuerpo de color negro y blanco con partes de color castaño. Habita en orillas de ríos, lagunas y pantanos de la cuenca del Orinoco y el Amazonas, en Venezuela, Colombia, Brasil y el Perú. Es una especie poco común y está clasificada como casi amenazada.