Greater White-fronted Goose vs Black Scoter
Anser albifrons comparado con Melanitta americana
Side-by-Side Comparison
| Atributo | Greater White-fronted Goose | Black Scoter |
|---|---|---|
| Nombre científico | Anser albifrons | Melanitta americana |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Near Threatened |
| Longitud | — | — |
| Envergadura | 81,6 cm (32.1 in) | 44,0 cm (17.3 in) |
| Peso | 2471,0 g (87.16 oz) | 1046,1 g (36.90 oz) |
| Dieta | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Dives for molluscs, particularly mussels and clams, in coastal waters. Takes aquatic insects and plant … |
| Tamaño de la puesta | 3-9 | 5-11 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Greater White-fronted Goose only
Black Scoter 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.
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.
Black Scoter
Male produces a low, melodious whistle; female gives a harsh, grating call. Closely related to Common Scoter; voice very similar; heard on North American Pacific and Atlantic coasts in winter.
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.
Black Scoter
Breeds in boreal forests and tundra of Alaska and northern Canada. Winters along Pacific and Atlantic coasts south to Baja California and Florida.
Estado de conservación
Greater White-fronted Goose
Black Scoter
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 …
Black Scoter
Male is pure glossy black throughout with a prominent bright orange-yellow knob at bill base. Female is dark sooty-brown with pale buff cheeks and foreneck contrasting with darker cap and …
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.
Black Scoter
El negrón americano es el homólogo americano del negrón común, del que se diferencia por el color del pico del macho, con un pronunciado gálbulo amarillo-naranja. Cría en la tundra y los bosques boreales de Norteamérica e inverna en las costas del Atlántico y del Pacífico de Estados Unidos. Es relativamente común en sus cuarteles de invierno donde puede verse en grandes bandadas.