Taiga Bean Goose vs Black-headed Duck
Anser fabalis comparado con Heteronetta atricapilla
Side-by-Side Comparison
| Atributo | Taiga Bean Goose | Black-headed Duck |
|---|---|---|
| Nombre científico | Anser fabalis | Heteronetta atricapilla |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 89,7 cm (35.3 in) | 34,7 cm (13.7 in) |
| Peso | 3115,0 g (109.88 oz) | 528,5 g (18.64 oz) |
| Dieta | Eats seeds, aquatic plants, and invertebrates; forages in shallow water and on land; diet varies … | Parasitic; adults may feed on aquatic plants, seeds, and invertebrates in South American marshes. Diet … |
| Tamaño de la puesta | 3-8 | 2 |
| Population Trend | — | — |
Habitat Comparison
Taiga Bean Goose
Breeds in taiga forest, boggy clearings, and river valleys across Scandinavia and northern Russia. Winters on agricultural fields, pastures, and river valleys in western and central Europe, particularly Belgium and the Netherlands.
Song & Call Comparison
Taiga Bean Goose
A low, nasal 'ung-unk' or 'ow' call — less nasal than Grey-lag. Flocks give continuous calling. The call distinction from Tundra Bean Goose is subtle but detectable.
Black-headed Duck
Male gives a soft, raspy peeping note; female produces a muted quack. An obligate brood parasite with reduced vocalizations; subdued calls suit its secretive lifestyle among Argentine reeds.
Geographic Range & Migration
Taiga Bean Goose
Breeds across Alaska and Canada; winters in the US interior and along coastlines south to the Gulf of Mexico.
Black-headed Duck
Resident in southern South America from southern Brazil and Bolivia south to Argentina and Chile. Found on lakes and marshes in open lowlands.
Estado de conservación
Taiga Bean Goose
Black-headed Duck
How to Tell Them Apart
Taiga Bean Goose
Dark brown head and neck; back dark brown with pale feather edges giving scalloped appearance. Underparts pale gray-brown. Bill orange-yellow with black base and tip. Orange legs. Darker than Pink-footed …
Black-headed Duck
Male has distinctive jet-black head and neck, warm chestnut-brown back, and pale buff underparts; blue-grey bill with red base. Female is streaked brown above with pale supercilium and whitish underparts.
About These Birds
Taiga Bean Goose
El ansar campestre es un ganso de cuello largo de color marrón oscuro con el pico negro y naranja. Cría en la taiga y la tundra del norte de Europa y Asia, y migra al sur para pasar el invierno en campos de cultivo y praderas de Europa occidental y Asia oriental. Se alimenta principalmente de hierbas, cereales y raíces en sus zonas de invernada.
Black-headed Duck
El pato cabeza negra es un pequeño pato buceador (~530 g) de América del Sur, familia Anatidae, y el único miembro del género Heteronetta. Tiene la cabeza negra en el macho y cuerpo marrón. Parásita de nido obligada: pone sus huevos en los nidos de otras aves acuáticas, especialmente fochas y pollas de agua. Habita en lagos y lagunas con vegetación emergente de Argentina, Bolivia, Brasil, Chile, Paraguay y Uruguay. No cría su propia cría nunca.