mallard

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Related to Platyrhynchos: Mallard duck, Mallard Drake

mallard:

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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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Mallard

 

(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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Changes in mallard (Anas platyrhynchos) serum chemistry due to age, sex, and reproductive condition.
Organogenesis of the digestive system in Neotropical carnivorous freshwater catfish Hemisorubim platyrhynchos (Siluriformes: Pimelodidae).
Nucleotides of central Javanese duck D-loop mtDNA aligned with the another Anas in the world that is Anas zonorhyncha (AY506969.1), Anas acuta (HM063478.1), Anas platyrhynchos (KJ833587.1), and Cairina moschata (GQ922096.1) as out of the group.
platyrhynchos embryos were obtained from a licensed commercial supplier at Pala-o, Iligan City, Philippines.
Very few studies on the diet of waterbirds have been carried out in Algeria; In particular, [22] in Chott Ain El-Beida in Ouargla, and [4] in Lake Tonga and the Makhada Marsh, [14] Predators who are waterbirds and their prey at El Kala National Park (Lake Tonga).To better understand these ecosystems functioning, and to carry out properly trophic ecology of Anas platyrhynchos relationship animal-plant were approached, by evaluation in trophic resources availabilities of environments frequented by Anas platyrhynchos and in the second time by study of its dietary based on droppings analysis.
Kidneys were relapsed in broiler chickens after Cd administration and severe kidney lesions were also found in Cd treated Pekin ducks (Anas platyrhynchos domestica) [19-21].
Weights of wild mallard Anas platyrhynchos, gadwall A.
Until recently, at Aracinovsko Blato and Katlanovsko Blato during winter there could be seen flocks of over 2,000 mallards (Anas platyrhynchos), 1,500 common cranes (Grus grus), grey herons (Ardea cinerea), purple herons (Ardea purpurea), greylag geese (Anser anser), western marsh harriers (Circus aeruginosus)--birds of prey and the worst enemies to all types of wetland birds, and white storks (Ciconia ciconia).
glabra), reptiles (Iguana iguana) y aves (Anas platyrhynchos diazi, Ardea alba, Ardea herodias, Chloroceryle americana, Dendrocygna autumnalis, Nyctanassa violacea y Phalacrocorax brasilianus).
Embryos of Pekin ducks (Anas platyrhynchos domestica) repositioned almost a centimeter, and those of three other birds on average shifted a few millimeters.