American Black Duck vs White-backed Duck
Anas rubripes comparado con Thalassornis leuconotus
Side-by-Side Comparison
| Atributo | American Black Duck | White-backed Duck |
|---|---|---|
| Nombre científico | Anas rubripes | Thalassornis leuconotus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 33,3 cm (13.1 in) |
| Peso | 1211,25 g (42.73 oz) | 704,6666666666666 g (24.86 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1-17 | 4-10 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
White-backed 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-backed Duck
Freshwater lakes, ponds, and swamps with abundant floating aquatic vegetation, especially water lilies, in sub-Saharan Africa and Madagascar. Prefers shallow sheltered water with emergent vegetation for cover.
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-backed Duck
Soft, low whistles and hissing sounds. The White-backed Duck is relatively quiet compared to whistling-ducks. Alarm call is a low 'peep'. Mostly heard at night.
Estado de conservación
American Black Duck
White-backed 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-backed Duck
Heavily mottled and barred brown and buff overall. Diagnostic white back patch visible in flight. Head brown with whitish face and chin. Stiff tail held erect. Sexes similar; stiff-tail diving …
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-backed Duck
El pato blanquinegro es un pato de cola tiesa africano con un plumaje críptico de color marrón oscuro moteado de blanco. Se distingue por su cabeza de color caqui y el cuello barreado. Habita en pantanos con vegetación densa y lagnas con abundante vegetación flotante en África subsahariana y Madagascar. Está clasificado como casi amenazado.