Brent Goose vs Ruddy Duck
Branta bernicla comparado con Oxyura jamaicensis
Side-by-Side Comparison
| Atributo | Brent Goose | Ruddy Duck |
|---|---|---|
| Nombre científico | Branta bernicla | Oxyura jamaicensis |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 63,9 cm (25.2 in) | 27,9 cm (11.0 in) |
| Peso | 1335,0 g (47.09 oz) | 586,6666666666666 g (20.69 oz) |
| Dieta | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … | Dives for aquatic plant seeds, roots, and invertebrates in freshwater marshes. Uses stiff tail as … |
| Tamaño de la puesta | 1-10 | 5-15 |
| 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.
Ruddy Duck
Male produces a mechanical, drumming bok-bok-bok staccato beat; female gives a harsh, nasal quack. The male's rapid drum-roll call on the bill during display is startlingly loud and distinctive.
Geographic Range & Migration
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Ruddy Duck
Breeds across interior North America from western Canada south to Mexico. Winters on coasts and inland waters south to northern South America.
Estado de conservación
Brent Goose
Ruddy 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.
Ruddy Duck
Breeding male has vivid rufous-chestnut body, black crown, white cheeks, and bright sky-blue bill; stiff tail often cocked upright. Female is dull brown with pale cheek crossed by single dark …
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.
Ruddy Duck
El pato malvasía norteamericano es un pato de cola tiesa con el macho de cabeza negra y mejillas blancas y el cuerpo de color castaño rojizo. Es originario de América del Norte y el Caribe, pero fue introducido accidentalmente en Europa donde la hibridación con la malvasía amenaza la supervivencia de esta especie en peligro de extinción. En vuelo, el aleteo rápido produce un zumbido audible.