Ducks, Mallards & Wigeons
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Duck is the common name for a number of species in the Anatidae family of birds. The ducks are divided between several subfamilies listed in full in the Anatidae article.
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.
Most ducks have a wide flat beak adapted for dredging. They exploit a variety of food sources such as grasses, grains and aquatic plants, fish, and insects. Some (the diving ducks) forage deep underwater; the others (the dabbling ducks feed from the surface of water or on land.
Dabbling ducks have special plates called lamellae that are similar to a whale's baleen. These tiny rows of plates along the inside of the bill allow them to filter water out of the side of their bills and keep the food inside.
To be able to submerge easier, the diving ducks are heavier for size than dabbling ducks, and therefore have more difficulty taking off to fly. A few specialized species (the goosander and the mergansers) are adapted to catch large fish.
The males (drakes) of northern species often have showy plumage, but this is moulted in summer to give a more female-like appearance, the "eclipse" plumage.
Many species of ducks are temporarily flightless while moulting; they seek out protected habitat with good food supplies during this period. This moult typically precedes migration.
Some duck species, mainly those breeding in the temperate and arctic Northern Hemisphere, are migratory, but others are not. Some, particularly in Australia where rainfall is patchy and erratic, are nomadic, seeking out the temporary lakes and pools that form after localised heavy rain.
Some people use the words "duck" specifically for adult females and "drake" for adult males, of the species described here. Others use "hen" and "drake", respectively.
Ducks are sometimes confused with several types of unrelated water birds with similar forms, such as loons or divers, grebes, gallinules, and coots.
Ducks and Humans
In many areas, wild ducks of various species (including ducks farmed and released into the wild) are hunted for food or sport, by shooting, or formerly by decoys. From this came the expression "a sitting duck" to mean "an easy target".
Ducks have many economic uses, being farmed for their meat, eggs, feathers and down feathers. They are also kept and bred by aviculturists and often displayed in zoos.
All domestic ducks are descended from the wild Mallard, Anas platyrhynchos, except Muscovy Ducks.
Many breeds have become much larger than their wild ancestor, with a "hull length" (from base of neck to base of tail) of 30 cm (12 inches) or more and routinely able to swallow an adult British Common Frog, Rana temporaria, whole.
Foie gras is often made using ducks instead of geese.
In a wildlife pond, the bottom over most of the area should be too deep for dabbling wild ducks to reach the bottom, to protect bottom-living life from being constantly disturbed and eaten by ducks dredging.
The sound made by some female ducks is called a "quack"; a common (and false) urban legend is that quacks do not produce an echo.
Etymology
The word duck from (Anglo-Saxon duce) meaning the bird, came from the verb "to duck" (from Anglo-Saxon supposed *ducan) meaning "to bend down as if to get under something", because of the way many species in the dabbling duck group feed by upending (compare the Dutch word duiken = "to dive"). This happened because the older Old English word for "duck" came to be pronounced the same as the word for "end": other Germanic languages still have similar words for "duck" and "end": for example, Dutch eend = "duck", eind = "end"; compare Latin anas (stem anat-) = "duck", Sanskrit anta (masc.) = "end", Lithuanian antis = "duck".
Copyright: Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from WIkipedia.org
Related Websites: Anatidae Ducks, Swans, Geese ... Ducks of the World ... Duck Breeds - Oklahoma State University (OSA) .. Cutler's Pheasant Supply - Featuring netting, leg bands, new quail egg trays, etc. for poultry, pigeon, peafowl, ratite and cage birds. ... Mac Farlane Pheasant Farm supplies ringnecks and other pheasants for hunting and meat. Also sells fresh exotic meats. ... Metzer Farms Duck & Goose Hatchery - Source for ducklings and goslings, fresh eggs, balut (partially incubated duck eggs), blown goose and duck eggs, mallards for dog trials and hunting clubs.
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