Greater White-fronted Goose vs Smew
Anser albifrons so với Mergellus albellus
Side-by-Side Comparison
| Thuộc Tính | Greater White-fronted Goose | Smew |
|---|---|---|
| Tên Khoa Học | Anser albifrons | Mergellus albellus |
| Bộ | Anseriformes | Anseriformes |
| Họ | Anatidae | Anatidae |
| Tình Trạng Bảo Tồn | Least Concern | Least Concern |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 81,6 cm (32.1 in) | 37,5 cm (14.8 in) |
| Khối Lượng | 2471,0 g (87.16 oz) | 658,75 g (23.24 oz) |
| Chế Độ Ăn | Dabbles for aquatic invertebrates, seeds, and plant material; diet shifts heavily toward invertebrates in breeding … | Dives for small fish, aquatic insects, and crustaceans in freshwater and coastal habitats. Uses serrated … |
| Số Trứng | 3-9 | 5-11 |
| Population Trend | — | — |
Habitat Comparison
Môi Trường Sống Chung
Greater White-fronted Goose only
Không
Smew only
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.
Smew
Male gives a soft, crow-like krr note; female produces a grating, rasping call. Both sexes are relatively quiet; the male's harsh, crow-like call is surprisingly low for such a small …
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.
Smew
Breeds in boreal forests of northern Europe and Siberia. Winters on large lakes and coasts from western Europe east to Japan and China.
Tình Trạng Bảo Tồn
Greater White-fronted Goose
Smew
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 …
Smew
Male is largely white with black eye patch, black lines on back, and fine black lines on flanks creating a cracked-ice pattern. Female has chestnut-red head, white cheeks, and grey …
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.
Smew
A small merganser (~660 g) in family Anatidae, males predominantly white with fine black markings and a small crest. Breeds in boreal forests of northern Eurasia near rivers and lakes, nesting in tree holes; winters on freshwater and coastal waters in central and western Europe. Feeds on small fish and aquatic invertebrates. Least Concern.