American Black Duck vs Comb Duck
Anas rubripes comparado con Sarkidiornis sylvicola
Side-by-Side Comparison
| Atributo | American Black Duck | Comb Duck |
|---|---|---|
| Nombre científico | Anas rubripes | Sarkidiornis sylvicola |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 60,9 cm (24.0 in) |
| Peso | 1211,25 g (42.73 oz) | 1817,5 g (64.11 oz) |
| Dieta | Eats fish and aquatic invertebrates; dives in coastal and freshwater habitats; diet shifts toward molluscs … | Feeds on seeds, plant material, and invertebrates; dabbles and sifts shallow water; diet varies widely … |
| Tamaño de la puesta | 1-17 | -- |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
American Black Duck only
Comb Duck 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.
Comb Duck
Freshwater lakes, rivers, flooded savannas, and seasonally inundated forest in lowland tropical South America from Panama south to Bolivia, Brazil, and northern Argentina. Nests in tree cavities near permanent water.
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.
Comb Duck
A soft, nasal 'wuk-wuk' call. Both sexes give similar quiet calls. Generally a less vocal duck than most waterfowl. Gives a rattling wingbeat sound during flight.
Geographic Range & Migration
American Black Duck
Breeds in the steppe zone of Central Asia; winters in South Asia, East Africa, and coastal Southeast Asia.
Comb Duck
Breeds in the prairie pothole region of central North America; winters along the Pacific coast from Alaska to Mexico.
Estado de conservación
American Black Duck
Comb 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 …
Comb Duck
Males have white head densely spotted black; black back with blue-green iridescence; white underparts with gray flanks. Prominent black fleshy knob on bill. Females smaller, duller, lack knob. South American.
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.
Comb Duck
El pato crestudo del Nuevo Mundo o pato jorobado es un gran pato arbóreo de América del Sur y Central con el macho presentando una característica protuberancia o joroba de color negro sobre el pico. El plumaje es negro iridiscente en el dorso y blanco en las partes inferiores. Habita en pantanos boscosos y lagunas en bosques tropicales. Es el pato más grande de América del Sur.