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Mallard. When you think of ducks, the bird you picture is most likely a Mallard. This is because these ducks are seemingly everywhere, with populations spanning from South Africa to North America.
The mallard (/ ˈ m æ l ɑːr d, ˈ m æ l ər d /) or wild duck (Anas platyrhynchos) is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. It has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Argentina, Chile, Colombia, the Falkland Islands, and South Africa.
The White Muscovy and the Pekin are the two most common purebred, commercially farmed ducks. Hybrids of the two are hardier and calmer, in addition to exhibiting natural hybrid vigor. [2] The incubation period of the hybrid eggs is between the mallard and Muscovy, with an average of 32 days. About half of the eggs hatch into mulard ducks.
Rouen Clair duck, female Rouen ducks featured in Mrs. Beeton's Book of Household Management in 1861. The Rouen is a heavyweight breed of domesticated duck. [1] Rouens are raised primarily for meat, exhibition, [2] or as general purpose ducks. Since they are not prolific egg layers, Rouen ducks are most commonly bred for their meat. [2]
A crest of feathers may appear in any duck breed or type deriving from the wild Mallard, Anas platyrhynchos, with a frequency of some 0.0001%–0.001% of all eggs hatched. [9]: 89 It results from the action of a very variable autosomal dominant allele, which is semi-lethal and may display incomplete penetrance as well as incomplete dominance.
The Muscovy is commonly reared for meat. [4]: 78 Mulards from the crossing of a Muscovy duck (Cairina moschata) and a wild-type mallard (Anas platyrhynchos)In commercial production, it is often crossed with a mallard-derived domestic duck such as the Rouen or Pekin to produce the hybrid known as a mulard.
Domestic ducks are mostly promiscuous, where wild mallards are monogamous. Domestic ducks have lost the mallard's territorial behaviour, and are less aggressive than mallards. [7] [8] Despite these differences, domestic ducks frequently mate with wild mallard, producing fully fertile hybrid offspring. [9]
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