Golden Leif Sohlman Photograph by Leif Sohlman

140

Golden Leif Sohlman

by Leif Sohlman

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Title

Golden Leif Sohlman

Artist

Leif Sohlman

Medium

Photograph - Photo Photography

Description

Mallard in golden water in Enk�ping, Sweden, autumn 2013.
Canon 5D mk III

The Mallard (/ˈm�lɑrd/ or /ˈm�lərd/) or Wild Duck (Anas platyrhynchos) is a dabbling duck which breeds throughout the temperate and subtropical Americas, Europe, Asia, and North Africa, and has been introduced to New Zealand and Australia. 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 wings and belly, while the females have mainly brown-speckled plumage. Mallards live in wetlands, eat water plants and small animals, and are gregarious. This species is the ancestor of most breeds of domestic ducks
The Mallard was one of the many bird species originally described by Carl Linnaeus in his 18th-century work, Systema Naturae, and still bears its original binomial name.[3]

"Mallard" is derived from the Old French malart or mallart "wild drake", although its ultimate derivation is unclear. It may be related to an Old High German masculine proper name Madelhart, clues lying in the alternate English forms "maudelard" or "mawdelard".[4]

Mallards frequently interbreed with their closest relatives in the genus Anas, such as the American Black Duck, and also with species more distantly related, for example the Northern Pintail, leading to various hybrids that may be fully fertile.[5] This is quite unusual among different species, and apparently is because the Mallard evolved very rapidly and recently, during the Late Pleistocene. The distinct lineages of this radiation are usually kept separate due to non-overlapping ranges and behavioural cues, but are still not fully genetically incompatible.[citation needed] Mallards and their domesticated conspecifics are also fully interfertile.

The genome of Anas platyrhynchos was sequenced in 2013.[6]

Mallards appear to be closer to their Indo-Pacific relatives than to their American ones judging from biogeography. Considering mtDNA D-loop sequence data,[7] they may have evolved in the general area of Siberia; Mallard bones rather abruptly appear in food remains of ancient humans and other deposits of fossil bones in Europe, without a good candidate for a local predecessor species.[citation needed] The large ice age paleosubspecies which made up at least the European and west Asian populations during the Pleistocene has been named Anas platyrhynchos palaeoboschas.[citation needed]

Haplotypes typical of American Mallard relatives and Spotbills can be found in Mallards around the Bering Sea.[8] The Aleutian Islands hold a population of Mallards that appear to be evolving towards a subspecies, as gene flow with other populations is very limited.[7]

The size of the Mallard varies clinally, and birds from Greenland, although larger than birds further south, have smaller bills and are stockier. They are sometimes separated as subspecies, the Greenland Mallard (A. p. conboschas).[citation needed]

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