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see duckduck,
common name for wild and domestic waterfowl of the family Anatidae, which also includes geese and swans. It is hunted and bred for its meat, eggs, and feathers. Strictly speaking, duck refers to the female and drake to the male.
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(Anas platyrhynchos) a bird of the family Anatidae. It measures about 60 cm long and weighs 0.8 to 1.4 kg. In the spring the head and neck of the male are dark green, and there are purplish blue specula on the wings. The female is of dark brownish color. In the summer the male resembles the female.

The mallard is distributed in Europe, Asia (except the south), and North America. In the USSR it is found from the southern borders to the arctic circle (in Eastern Siberia it does not reach the arctic circle). The mallard flies south or southwest for the winter (isolated individuals may winter on unfrozen bodies of water). It nests on the ground, on hillocks, and sometimes beneath trees; more rarely it nests on trees, in hollows, or in artificial nesting places. A clutch has eight to 14 eggs; most often it is ten or 11. The female incubates the eggs for 26 days. Mallards feed on algae, seeds, insects, small crustaceans, and mollusks. With the ripening of cereal grains, they fly out for night feedings in the fields; in some areas they damage rice plantings. Mallards are game birds. The domestic duck is descended from the mallard.


a duck, Anas platyrhynchos, common over most of the N hemisphere, the male of which has a dark green head and reddish-brown breast: the ancestor of all domestic breeds of duck
References in periodicals archive ?
Six juvenile healthy mallard ducks (Anas platyrhynchos), of unknown sex and weighing 866-943 g, were used in the study.
A total of 19 farms where domestic mallard ducks were raised (15 in Tiandong, 3 in Daxin, and 1 in Xilin) and 50,000 birds were affected.
A privately owned, 3-year-old, male, hybrid mallard duck (Anas platyrhynchos), weighing 1.
A 5-month-old female wild mallard duck (Anas platyrhynchos) was brought to the Wisconsin Humane Society's Wildlife Rehabilitation Center in June with a beak injury that resulted from a fish hook deeply embedded in the nares and rhinotheca.
Evaluation of brachial plexus nerve blocks in different avian species might also be prudent because the mallard duck might not be an appropriate avian model for this technique.
Now the 21-year-old, who five years ago killed a Mallard duck, could face jail after admitting causing the unnecessary suffering of the birds.
It included the dinner menu for the event: olives, salted almonds, English sole, mallard duck, beef a la Portuguese, Roquefort cheese.
Surface geophysics and mapping surveys to refine drill targets will be also be completed over the Zachary Bay, Kawisgag, Bee Creek, Balboa, Warner Bay and Mallard Duck Bay porphyry Cu-Au-Mo projects, as well as several other prospects.
A case of unilateral seminoma with visceral metastases in a mallard duck (Anas platyrhynchos) is reported.
Pemberton also has pleaded guilty to criminal damage to a goose and to possessing a dead wild mallard duck.
Jennifer Woods, 11, gets a kiss from her mallard duck, Baby, in Midland, Mich.
Most recently, Group 3 coronaviruses have been detected in greylag goose (Anser anser), mallard duck (Anas platyrhynchos) and pigeon (Columba livia).