Brent Goose vs Andean Duck
Branta bernicla comparado con Oxyura ferruginea
Side-by-Side Comparison
| Atributo | Brent Goose | Andean Duck |
|---|---|---|
| Nombre científico | Branta bernicla | Oxyura ferruginea |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 63,9 cm (25.2 in) | 31,4 cm (12.4 in) |
| Peso | 1335,0 g (47.09 oz) | 800,75 g (28.25 oz) |
| Dieta | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | Dives for aquatic invertebrates and plant seeds in Andean lakes and marshes. Diet similar to … |
| Tamaño de la puesta | 1-10 | 6-10 |
| Population Trend | — | — |
Habitat Comparison
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.
Andean Duck
Male gives a rapid, staccato drumming display call; female produces a nasal, quacking rattle. The male's mechanical drumming is similar to Ruddy Duck; echoes across Andean high-altitude lakes.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Andean Duck
Resident in the Andes of Colombia, Ecuador, Peru, Bolivia, and northwestern Argentina. Found on high-altitude lakes above 3,000 m.
Estado de conservación
Brent Goose
Andean 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.
Andean Duck
Male is dark chestnut-rufous overall with black head, white cheeks tinged grey, and deep blue bill. Female is dark brownish with pale cheeks divided by a dark bar; similar to …
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.
Andean Duck
El pato de cabeza blanca del Pacífico es un pato de cola tiesa de Asia occidental y central. El macho tiene la cabeza blanca, la cara y el cuello negros, y el cuerpo de color castaño rojizo brillante. Habita en lagos de montaña, pantanos y estanques en su rango, que comprende desde Turquía hasta el oeste de China. A veces es considerado una subespecie de la malvasía.