Many species of ducks are temporarily flightless while moulting they seek out protected habitat with good food supplies during this period. Southern resident species typically show less sexual dimorphism. The males (drakes) of northern species often have extravagant plumage, but that is moulted in summer to give a more female-like appearance, the “eclipse” plumage. A few specialized species such as the Smew, Goosander, and the mergansers are adapted to catch large fish. To be able to submerge more easily, the diving ducks are heavier than dabbling ducks, and therefore have more difficulty taking off to fly. These tiny rows of plates along the inside of the beak let them filter water out of the side of their beaks and keep food inside. Dabbling ducks have in their beaks special plates called lamellae similar to a whale’s baleen. Diving ducks and sea ducks forage deep underwater Dabbling ducks feed on the surface of water or on land. They exploit a variety of food sources such as grasses, aquatic plants, fish, insects, small amphibians, worms, and small molluscs. Most ducks have a wide flat beak adapted for dredging. Ducks are mostly aquatic birds, mostly smaller than their relatives the swans and geese, and may be found in both fresh water and sea water.
Geo duck diving alaska full#
The ducks are divided between several subfamilies listed in full in the Anatidae article. Alaska Ducks (Anatidae family of birds) Ducks are everywhere in Alaskaĭuck is the common name for a number of species in the Anatidae family of birds.
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