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Anas querquedula
The adult male is unmistakable, with its brown head and breast with a broad white crescent over the eye. The rest of the plumage is grey, with loose grey scapular feathers It has a grey bill and legs. In flight it shows a pale blue speculum with a white border. When swimming it will show prominent white edges on its tertials. His crown (anatomy) is dark and face is reddish-brown.
The common English name dates from the 17th century and comes from dialect Italian gargenei, a variant of garganello, which ultimately comes from the Late Latin gargala "tracheal artery".[5] The English usage owes its origins to Conrad Gesner who used the Italian name in the third volume of his Historiae Animalium (History of Animals) of 1555.