Greater White-fronted Goose vs Ross's Goose
Anser albifrons comparado con Anser rossii
Side-by-Side Comparison
| Atributo | Greater White-fronted Goose | Ross's Goose |
|---|---|---|
| Nombre científico | Anser albifrons | Anser rossii |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 81,6 cm (32.1 in) | 69,2 cm (27.2 in) |
| Peso | 2471,0 g (87.16 oz) | 1513,5 g (53.39 oz) |
| Dieta | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Eats aquatic plants, seeds, and grasses near wetlands; omnivorous in breeding; takes invertebrates in shallow … |
| Tamaño de la puesta | 3-9 | 2-8 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Greater White-fronted Goose only
Ross's Goose only
Ninguno
Greater White-fronted Goose
Breeds on Arctic and subarctic tundra and peatlands. Winters on estuaries, agricultural fields, freshwater marshes, and flooded meadows across Europe, Asia, and North America. One of the most widespread geese.
Ross's Goose
Breeds on tundra near Hudson Bay and the central Canadian Arctic. Winters in agricultural fields, rice paddies, and wetlands in the central and southern United States, particularly California's Central Valley.
Song & Call Comparison
Greater White-fronted Goose
A loud, laughing 'kow-lyuk' or musical 'wah-wah'. Gives a distinctive high-pitched yodeling quality lacking in Greylag. Highly vocal in large winter flocks.
Ross's Goose
A high, nasal yelping 'whoik' or 'hoik' — higher-pitched than Snow Goose. Flocks mix with Snow Geese; calls differ noticeably by pitch. Fast, repeated notes in flight.
Geographic Range & Migration
Greater White-fronted Goose
Breeds in the potholes region of the northern Great Plains; winters in the southern United States and along the Gulf Coast.
Ross's Goose
Breeds in high Arctic tundra; winters at sea in the North Atlantic from Iceland to the British Isles and northeastern United States.
Estado de conservación
Greater White-fronted Goose
Ross's Goose
How to Tell Them Apart
Greater White-fronted Goose
Brown-gray body with white forehead patch bordered by white band at bill base. Underparts with bold irregular black bars on belly. Orange bill; orange-yellow legs. Juveniles lack white front and …
Ross's Goose
Smallest white North American goose; pure white plumage with black wingtips. Short triangular pink bill with warty pinkish-gray base. Pink-red legs. Occasional blue morph. Sexes similar.
About These Birds
Greater White-fronted Goose
El ánsar careto o ganso careto mayor es un ganso mediano de color pardo con una llamativa mancha blanca en la frente y barras negras en el vientre. Tiene un amplio rango de cría en la tundra ártica del hemisferio norte y migra a zonas templadas de Europa, Asia y América del Norte para pasar el invierno, donde a menudo se reúne en grandes bandadas en campos agrícolas.
Ross's Goose
El ganso de Ross es el menor ganso blanco americano, similar al ganso de las nieves pero más pequeño, con el pico más corto y sin el galpón negro en la mandíbula. Cría en la tundra ártica del norte de Canadá y migra al sur de California y el golfo de México para pasar el invierno. La caza casi lo extinguió a principios del siglo XX, pero sus poblaciones se han recuperado.