Common Pochard vs Brent Goose
Aythya ferina comparado con Branta bernicla
Side-by-Side Comparison
| Atributo | Common Pochard | Brent Goose |
|---|---|---|
| Nombre científico | Aythya ferina | Branta bernicla |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Vulnerable | Least Concern |
| Longitud | — | — |
| Envergadura | 41,7 cm (16.4 in) | 63,9 cm (25.2 in) |
| Peso | 845,5 g (29.82 oz) | 1335,0 g (47.09 oz) |
| Dieta | Eats molluscs, crustaceans, and aquatic invertebrates; dives in shallow water; diet dominated by hard-shelled benthic … | Primarily herbivorous; grazes aquatic plants, grasses, and sedges; swans upend in shallow water for submerged … |
| Tamaño de la puesta | 3-22 | 1-10 |
| Population Trend | — | — |
Habitat Comparison
Common Pochard
Breeds on freshwater lakes and marshes with emergent vegetation across Eurasia from Iceland and western Europe east to Siberia. Winters on large open lakes, reservoirs, and estuaries.
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
Common Pochard
Male emits a soft, wheezing purr; female gives a harsh, grating quacking series. The male's gentle, sibilant purring contrasts with the female's loud, grating call on European and Asian lakes.
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.
Geographic Range & Migration
Common Pochard
Breeds across northern and central North America; winters in Mexico, Central America, and along both US coasts.
Brent Goose
Breeds across boreal and subarctic Canada and Alaska; winters in the southern United States, Mexico, and Central America.
Estado de conservación
Common Pochard
Brent Goose
How to Tell Them Apart
Common Pochard
Males have chestnut-red head and neck; black breast; pale gray body; black undertail. Red eye. Blue-gray bill with dark base and tip. Females brown with pale face and eye-ring. Gray …
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.
About These Birds
Common Pochard
El porrón europeo o porrón común es un pato buceador de tamaño mediano que se reproduce en Europa y Asia y que inverna más al sur, incluyendo el sur de Europa y Asia meridional. El macho tiene la cabeza y el cuello de color castaño rojizo, el pecho negro y el cuerpo gris. Habita en lagos y embalses con abundante vegetación acuática sumergida.
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.