American Black Duck vs Harlequin Duck
Anas rubripes comparado con Histrionicus histrionicus
Side-by-Side Comparison
| Atributo | American Black Duck | Harlequin Duck |
|---|---|---|
| Nombre científico | Anas rubripes | Histrionicus histrionicus |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 53,4 cm (21.0 in) | 38,8 cm (15.3 in) |
| Peso | 1211,25 g (42.73 oz) | 553,0 g (19.51 oz) |
| Dieta | -- | Forages in fast-flowing streams for aquatic insect larvae, amphipods, and small fish. Dives and clings … |
| Tamaño de la puesta | 1-17 | 3-9 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Harlequin 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.
Harlequin Duck
Male gives a squeaky, mouse-like squeal; female produces a guttural, grunting call. The male's bizarre, high-pitched squealing call is completely unexpected in such a compact seaduck.
Geographic Range & Migration
American Black Duck
Harlequin Duck
Breeds on fast-flowing rivers in Iceland, Greenland, and northern North America. Winters along rocky Pacific and Atlantic coasts south to California.
Estado de conservación
American Black Duck
Harlequin 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 …
Harlequin Duck
Male is slate-blue with bold white crescent before eye, white spots and streaks on head, neck, and scapulars, and rich chestnut flanks. Female is dark sooty-brown with three white facial …
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.
Harlequin Duck
El pato arlequín es un espectacular pato de agua dulce con el macho de color azul-gris con parches blancos y castaños bordeados de negro, recordando el traje de un arlequín. Habita en ríos y arroyos de montaña de aguas rápidas e impetuosas durante la temporada reproductora, siendo uno de los pocos patos adaptados a la vida en torrentes de montaña. Inverna en costas rocosas.