Yellow-billed Duck vs Greater White-fronted Goose
Anas undulata comparado con Anser albifrons
Side-by-Side Comparison
| Atributo | Yellow-billed Duck | Greater White-fronted Goose |
|---|---|---|
| Nombre científico | Anas undulata | Anser albifrons |
| Orden | Anseriformes | Anseriformes |
| Familia | Anatidae | Anatidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 48,1 cm (18.9 in) | 81,6 cm (32.1 in) |
| Peso | 907,6666666666666 g (32.02 oz) | 2471,0 g (87.16 oz) |
| Dieta | Dives for fish, frogs, and aquatic invertebrates; uses serrated bill to grip prey; diet shifts … | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … |
| Tamaño de la puesta | 4-12 | 3-9 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Yellow-billed Duck only
Ninguno
Greater White-fronted Goose only
Yellow-billed Duck
Freshwater lakes, rivers, marshes, and dams across eastern and southern Africa from Ethiopia and Uganda south to the Cape. Tolerates agricultural impoundments and urban wetlands. Largely sedentary.
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
Yellow-billed Duck
Female gives a loud, descending quacking series; male utters a soft, raspy rehb note. The female's strong quacking call is the dominant sound at sub-Saharan African wetlands.
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.
Geographic Range & Migration
Yellow-billed Duck
Found across sub-Saharan Africa from Senegal to Ethiopia and south to South Africa. Sedentary in freshwater wetlands.
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.
Estado de conservación
Yellow-billed Duck
Greater White-fronted Goose
How to Tell Them Apart
Yellow-billed Duck
Brown body with scaly pale-edged feathers; head brown with paler face and throat. Diagnostic bright yellow bill with black central stripe. Iridescent green-and-black speculum with white borders. Sexes similar.
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 …
About These Birds
Yellow-billed Duck
El pato de pico amarillo es un pato de tamaño mediano con plumaje marrón oscuro moteado y un pico amarillo con una dorsal negra, lo que le da su nombre común. Está ampliamente distribuido en África subsahariana, donde habita en una variedad de humedales, incluyendo lagos, ríos, marismas y embalses. Es una especie común y adaptable que tolera bien la alteración humana de su hábitat.
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.