American Black Duck vs White-faced Whistling-duck
Anas rubripes comparado con Dendrocygna viduata
Side-by-Side Comparison
| Atributo | American Black Duck | White-faced Whistling-duck |
|---|---|---|
| Nombre científico | Anas rubripes | Dendrocygna viduata |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 42,9 cm (16.9 in) |
| Peso | 1211,25 g (42.73 oz) | 689,5 g (24.32 oz) |
| Dieta | -- | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes eating saltmarsh grasses and … |
| Tamaño de la puesta | 1-17 | 4-16 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
White-faced Whistling-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.
White-faced Whistling-duck
Freshwater lakes, marshes, rice paddies, flooded fields, and slow-moving rivers in sub-Saharan Africa and tropical South America. Tolerates a wide range of modified wetlands. Nomadic, following water availability.
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-faced Whistling-duck
A clear, 3-syllable whistle 'wee-wee-WEE' — the origin of 'whistling-duck'. Given in noisy flocks during flight. Also gives a softer 'de-de-de' contact call on water.
Geographic Range & Migration
American Black Duck
White-faced Whistling-duck
Found in floodplains and wetlands of the Llanos in Venezuela and eastern Colombia. Sedentary and locally nomadic in wet savannas.
Estado de conservación
American Black Duck
White-faced Whistling-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-faced Whistling-duck
Distinctive white face and throat contrasting with black hindneck. Breast chestnut; sides and flanks barred black and white. Back brown. Long gray legs. Sexes identical; upright whistling-duck posture.
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.
White-faced Whistling-duck
El pato silbador cariblanco es uno de los patos silbadores más comunes y extendidos de América del Sur y África. Fácilmente reconocible por la cara blanca y la frente negra, el cuello castaño y el cuerpo oscuro. Es un ave gregaria que forma grandes bandadas en torno a lagunas, pantanos y arrozales, y es especialmente activa al crepúsculo.