mallard: [14] Etymologically, a mallard seems to be a ‘male bird’. It comes from Old French mallart, which was probably a development of an earlier *maslart, a derivative of masle ‘male’ (source of English male). It was originally used for the ‘male of the wild duck’, but now it denotes either sex of the species (Anas platyrhynchos). => male[mallard etymology, mallard origin, 英语词源]