where are they widely found?
Throughout the temperate and subtropical Americas, Eurosiberia, and North Africa  along with New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa.
Mallard
The mallard () ("Anas platyrhynchos") is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurosiberia, and North Africa and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa.
when does a male mallards head turn green During the final period of maturity leading up to adulthood (6–10 months of age). what kind creatures are they? A dabbling duck . what are their food habits? Their diet consists mostly of gastropods, invertebrates (including beetles, flies, lepidopterans, dragonflies, and caddisflies), crustaceans, worms, many varieties of seeds and plant matter, and roots and tubers. can they be raised as pets? Yes, even though this trend is not very popular. is the meat of the bird consumed? Yes, both eggs and meat are consumed. are they under threat? No, they are in fact rated as a species of least concern.
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Mallard [SEP] Introduction
The mallard () ("Anas platyrhynchos") is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurosiberia, and North Africa and has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa. This duck belongs to the subfamily Anatinae of the waterfowl family Anatidae. The male birds (drakes) have a glossy green head and are grey on their wings and belly, while the females (hens or ducks) have mainly brown-speckled plumage. Both sexes have an area of white-bordered black or iridescent blue feathers called a speculum on their wings; males especially tend to have blue speculum feathers.