A mallard is a kind of wild duck which is very common.
mallard in British English
(ˈmælɑːd)
nounWord forms: plural-lard or -lards
a duck, Anas platyrhynchos, common over most of the N hemisphere, the male of which has a dark green head and reddish-brown breast: the ancestor of all domestic breeds of duck
Word origin
C14: from Old French mallart, perhaps from maslart (unattested); see male, -ard
mallard in American English
(ˈmælərd)
nounWord forms: pluralˈmallards or ˈmallard
the common wild duck (Anas platyrhynchos), from which the domestic duck is descended: the male has a green or bluish-black head, a thin band of white around the neck, and a rusty breast