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Hybrid of mallard duck × Muscovy duck. Charles Darwin also described duck hybrids in The Variation of Animals and Plants Under Domestication: Hybrids are often raised between the common and musk duck, and I have been assured by three persons, who have kept these crossed birds, that they were not wild; but Mr. Garnett (13/45.
The mulard duck, hybrid of the domestic Pekin duck and domesticated Muscovy ducks. Brewer's duck, hybrid of the mallard and gadwall. Genus Anas. In Australia, New Zealand and other areas where the Pacific black duck occurs, it is hybridised by the much more aggressive introduced mallard.
A wild mallard weighs some 1.1 kg (2.4 lb), but large breeds like the Aylesbury may weigh 4.6 kg (10 lb) (and hybrids even more), while small breeds like the Appleyard may be only 0.7 kg (1.5 lb). Those breeds are raised for meat and eggs, [ 2 ] while other breeds are purely ornamental, having been selected for their crests, tufts, or striking ...
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.
Backcrossing in particular can negatively impact non-mallard species as oftentimes the hybrids breed with the more vulnerable species, leading to further genetic dilution. In captivity studies with the American black duck it has been discovered that the hybrids follow Haldane's rule with hybrid females often dying before they reach sexual maturity.
The sacred ibis, a bird that was venerated in Ancient Egypt, is an example of how birds were a significant part of Egyptian culture. This is a list of the species of birds found in Egypt, a country in north-east Africa. [1] The avifauna of Egypt include a total of 501 species of birds. No species are endemic to Egypt. [2] [3]
[2] [3] The name of the genus Anas is the Latin word for a duck. The specific epithet zonorhyncha is derived from the classical Greek words zōnē meaning "band" or "girdle" and rhunkhos meaning "bill". [4] Historically, the eastern spot-billed duck was usually considered as a subspecies of the Indian spot-billed duck (A. poecilorhyncha).
Nests are normally built over the water at the edge of the water. [2] Females have also been observed to make their nests in rice fields. [3] The female lays up to 10 cream to greenish coloured eggs and she may even lay her eggs in another bird's nest if available. [2] Eggs are incubated for 27-29 days, and fledging occurs within 50-75 days. [2]