Unggas air (Waterfowl)
White-winged Scoter
Melanitta deglandi
- tidak umum
- 40 km/h
- Risiko rendah
Largest scoter, with a flashing white wing patch in flight. Dives for mussels in cold coastal water.
- Populasi
- No reliable global total population figure exists (remoteness of boreal breeding areas hampers surveys); population is described as widespread but decreasing
- Habitat
- Breeds on wooded coastlines, small freshwater lakes, pools and rivers within northern boreal/coniferous forest and taiga (often near rocky islands with herbaceous cover); winters mainly at sea in shallow inshore coastal waters, estuaries and inlets with mussel beds, occasionally diving to 30-40 m
- Fakta menarik
- Male White-winged Scoters do not acquire their fully glossy black adult plumage, orange-red knobbed bill, and white eye patch until about three years of age.
- Sebaran
- North America (largest breeding range of any North American scoter): breeds from Alaska across western/interior Canada, less commonly east toward Hudson Bay and south to the Canadian Prairies; winters along the Pacific coast, the Great Lakes, and the Atlantic/southern Canadian coasts; casual vagrant to Europe (Scotland, Ireland, Iceland, Norway) with locally reported records further afield in Bermuda and Greenland
- Makanan
- Benthic diver; feeds on amphipods and aquatic insects on freshwater breeding grounds, shifting to mollusks (clams, mussels) and crustaceans in marine wintering waters, with herring spawn reported seasonally along western coasts. A heavily muscled gizzard lets it crush hard-shelled prey whole.
- Ukuran
- 0,55 m
- Bentang sayap
- 0,8 m
- Masa hidup
- 9 tahun
