American Black Duck vs Blue-billed Duck
Anas rubripes comparado con Oxyura australis
Side-by-Side Comparison
| Atributo | American Black Duck | Blue-billed Duck |
|---|---|---|
| Nombre científico | Anas rubripes | Oxyura australis |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 30,8 cm (12.1 in) |
| Peso | 1211,25 g (42.73 oz) | 837,75 g (29.55 oz) |
| Dieta | -- | Dives for aquatic invertebrates, seeds, and plant material in Australian freshwater lakes and swamps. Highly … |
| Tamaño de la puesta | 1-17 | 5-6 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
Blue-billed Duck only
Ninguno
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.
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.
Blue-billed Duck
Male produces a mechanical, splashing display call with loud bill-drumming; female gives a harsh quack. The male's bizarre bubbling-cum-drumming display is spectacular on Australian lakes.
Geographic Range & Migration
American Black Duck
Blue-billed Duck
Resident in southwestern and southeastern Australia. Found on freshwater swamps and lakes, avoiding arid and tropical regions.
Estado de conservación
American Black Duck
Blue-billed 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 …
Blue-billed Duck
Breeding male is deep rich chestnut with black head and broad bright blue bill; tail often held erect. Female is dark brown with finely barred buff pattern on body and …
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.
Blue-billed Duck
El pato de cola azul australiano es un pato de cola tiesa endémico de Australia y Tasmania. El macho tiene el pico azul brillante, la cabeza negra y el cuerpo castaño rojizo. La hembra es de color marrón oscuro. Habita en pantanos de agua dulce profunda con vegetación emergente densa. Está clasificado como vulnerable, afectado por la pérdida de humedales.