Brent Goose vs White-headed Duck
Branta bernicla comparado con Oxyura leucocephala
Side-by-Side Comparison
| Atributo | Brent Goose | White-headed Duck |
|---|---|---|
| Nombre científico | Branta bernicla | Oxyura leucocephala |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Endangered |
| Longitud | — | — |
| Envergadura | 63,9 cm (25.2 in) | 29,7 cm (11.7 in) |
| Peso | 1335,0 g (47.09 oz) | 705,0 g (24.87 oz) |
| Dieta | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | Dives for aquatic invertebrates, seeds, and plant roots in Mediterranean and Central Asian wetlands. Critically … |
| Tamaño de la puesta | 1-10 | 3-10 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Brent Goose only
White-headed Duck only
Ninguno
Brent Goose
Breeds on high-Arctic tundra; winters on estuaries, coastal mudflats, saltmarshes, and sea-grass beds along Atlantic and Pacific coastlines. One of the most strictly coastal wintering geese.
Song & Call Comparison
Brent Goose
A low, guttural 'rronk' or 'ronk-ronk' from flocks. Soft nasal calls in feeding groups. A subtle, understated call for a goose — less loud than most Anser geese.
White-headed Duck
Male produces a mechanical, rapid bill-drumming; female gives a harsh, grating quack. The drumming staccato display is the same pattern as other Oxyura stiff-tails; heard on Eurasian steppe lakes.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
White-headed Duck
Breeds in Spain, Turkey, central Asia, and Mongolia. Winters in the Mediterranean, the Middle East, and northern India. Globally endangered.
Estado de conservación
Brent Goose
White-headed Duck
How to Tell Them Apart
Brent Goose
Small; mostly black head, neck, and breast. Small white neck-patch on adults. Back dark brownish-gray; belly pale gray to white depending on subspecies. White undertail coverts. Sexes similar.
White-headed Duck
Male has entirely white head with small black crown patch, rich chestnut-brown body, and large bulbous powder-blue bill. Female is brown with pale whitish face divided by dark streak across …
About These Birds
Brent Goose
El barnacla brenta o barnacla negruzca es un pequeño ganso marino de color negro y gris oscuro con un pequeño parche blanco a los lados del cuello. Cría en la tundra ártica y migra a zonas costeras templadas del hemisferio norte en invierno, donde se alimenta principalmente de zostera, un tipo de hierba marina. Es el único ganso que pasa el invierno en ambientes exclusivamente marinos.
White-headed Duck
El pato malvasía es un pato de cola tiesa en peligro de extinción con el macho de llamativa cabeza blanca y cuello negro con el pico azul brillante hinchado en la base. En el pasado fue cazado intensamente y su hábitat fue drenado, lo que lo llevó al borde de la extinción en el siglo XX. Gracias a esfuerzos de conservación intensivos, sus poblaciones se han recuperado parcialmente en el Mediterráneo.