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  2. Mallard complex - Wikipedia

    en.wikipedia.org/wiki/Mallard_complex

    The retention of ancestral genetic variation can be caused by incomplete lineage sorting (ILS) and introgression after secondary contact. These two factors can cause genetic variation to be shared between closely related species which is possibly why an American black duck or a Mottled duck (Anas fulvigula) may have notable white on its speculum or a Mexican duck may have flecks of green.

  3. Gamebird hybrids - Wikipedia

    en.wikipedia.org/wiki/Gamebird_hybrids

    The hybrids often resemble a dark coloured mallard with a white breast. Mallard ducks also hybridise with the Muscovy duck producing pied offspring. Hybrids between the ruddy duck and white-headed duck are undesirable in parts of Europe [24] [25] where the introduced ruddy duck has bred with native white-headed ducks. The increasing number of ...

  4. Mallard - Wikipedia

    en.wikipedia.org/wiki/Mallard

    The Mariana mallard was a resident allopatric population – in most respects a good species – apparently initially derived from mallard-Pacific black duck hybrids; [139] it became extinct in the late 20th century. [140] The Laysan duck is an insular relative of the mallard, with a very small and fluctuating population.

  5. List of duck breeds - Wikipedia

    en.wikipedia.org/wiki/List_of_duck_breeds

    This is a list of the breeds of domestic duck which have official recognition at national or international level. [1]Most breeds of duck derive from the wild mallard, Anas platyrhyncos, while a small minority are descendants of the Muscovy duck, Cairina moschata.

  6. Domestic duck - Wikipedia

    en.wikipedia.org/wiki/Domestic_duck

    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]

  7. Domestic Muscovy duck - Wikipedia

    en.wikipedia.org/wiki/Domestic_Muscovy_duck

    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.

  8. Speculum feathers - Wikipedia

    en.wikipedia.org/wiki/Speculum_feathers

    A male mallard. The speculum feathers are bright blue with white edges. The speculum is a patch, often distinctly coloured, on the secondary wing feathers, or remiges, of some birds. Examples of the colour(s) of the speculum in a number of ducks are: Common teal and green-winged teal: Iridescent green edged with buff. [1]

  9. American black duck - Wikipedia

    en.wikipedia.org/wiki/American_black_duck

    The American black duck (Anas rubripes) is a large dabbling duck in the family Anatidae.It was described by William Brewster in 1902. It is the heaviest species in the genus Anas, weighing 720–1,640 g (1.59–3.62 lb) on average and measuring 54–59 cm (21–23 in) in length with an 88–95 cm (35–37 in) wingspan.

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