Greater White-fronted Goose vs Black-bellied Whistling-duck
Anser albifrons в сравнении с Dendrocygna autumnalis
Side-by-Side Comparison
| Характеристика | Greater White-fronted Goose | Black-bellied Whistling-duck |
|---|---|---|
| Научное название | Anser albifrons | Dendrocygna autumnalis |
| Отряд | Anseriformes | Anseriformes |
| Семейство | Anatidae | Anatidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 81,6 cm (32.1 in) | 48,2 cm (19.0 in) |
| Масса | 2471,0 g (87.16 oz) | 757,9 g (26.73 oz) |
| Питание | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Grazes subarctic tundra grasses and sedges; winters on coastal salt marshes and agricultural fields eating … |
| Размер кладки | 3-9 | 9-18 |
| Population Trend | — | — |
Habitat Comparison
Общие среды обитания
Greater White-fronted Goose only
Black-bellied Whistling-duck only
Нет
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.
Black-bellied Whistling-duck
Freshwater wetlands, ponds, lake margins, flooded fields, and wooded swamps from the southern United States and Mexico through Central America to Ecuador, Bolivia, and Argentina. Uses nest boxes readily.
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-bellied Whistling-duck
A high, reedy whistle 'pe-che-che-ne' given in flight. Flocks produce a continuous whistling chorus. Also gives a squeaky 'whe-eee' contact call while swimming.
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-bellied Whistling-duck
Inhabits freshwater marshes and riverbanks from southeastern Brazil to northern Argentina and Bolivia. Sedentary; locally common.
Охранный статус
Greater White-fronted Goose
Black-bellied Whistling-duck
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-bellied Whistling-duck
Gray head with brown cap and chestnut breast; black belly is distinctive. Wings show broad white patch in flight. Coral-pink bill and long pink legs. Upright posture. Sexes similar.
About These Birds
Greater White-fronted Goose
A medium-large goose with a white forehead patch, orange bill, grey-brown plumage, and variable black barring on the belly. Widespread and numerous; one of the most abundant geese in the world. Breeds across the high Arctic; winters in a wide range of temperate wetland and agricultural habitats.
Black-bellied Whistling-duck
A boldly patterned whistling-duck with a bright red bill, chestnut-and-black body, broad white wing stripe, and a distinctive whistling call. Common in freshwater wetlands from the southern United States to central South America. Nests in tree cavities. Often perches in trees—unusual for waterfowl.