Greater White-fronted Goose vs Canvasback
Anser albifrons ile kıyaslandığında Aythya valisineria
Side-by-Side Comparison
| Özellik | Greater White-fronted Goose | Canvasback |
|---|---|---|
| Bilimsel Ad | Anser albifrons | Aythya valisineria |
| Takım | Anseriformes | Anseriformes |
| Familya | Anatidae | Anatidae |
| Koruma Durumu | Least Concern | Least Concern |
| Uzunluk | — | — |
| Kanat Açıklığı | 81,6 cm (32.1 in) | 44,7 cm (17.6 in) |
| Ağırlık | 2471,0 g (87.16 oz) | 1223,25 g (43.15 oz) |
| Beslenme | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Eats molluscs, crustaceans, and aquatic invertebrates; dives in coastal and freshwater habitats; diet dominated by … |
| Kuluçka Büyüklüğü | 3-9 | 2-16 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Greater White-fronted Goose only
Canvasback only
Hiçbiri
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.
Canvasback
Breeds on prairie potholes and boreal lakes across western North America. Winters on large open lakes, reservoirs, estuaries, and Chesapeake Bay. Sensitive to loss of prairie wetlands.
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.
Canvasback
Male produces a low, cooing purr; female gives a harsh, rolling quacking series. Males whisper-call in rolling, cooing notes during courtship; female's harsh quacking is emphatic on North American marshes.
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.
Canvasback
Breeds in wooded wetlands of Canada and the northern United States; winters in the southern US and Central America.
Koruma Durumu
Greater White-fronted Goose
Canvasback
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 …
Canvasback
Males have rich chestnut-red head and neck; black breast; pale canvas-gray body; white flanks. Sloping forehead profile with dark red bill and red eye. Females gray-brown with reddish-brown head. Dimorphic …
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.
Canvasback
A large diving duck with a distinctive sloping forehead and long sloped bill. Males have a rich chestnut-red head, black breast, and pale white-grey body; females are grey-brown. Named for its canvas-like grey back. Dives for aquatic roots and tubers, especially wild celery.