Mallard ducks have pointed wings and short rounded or square-tipped tails. They have mottled brown feathers punctuated by a patch of blue on the wings. Male Mallards have green heads and yellow ...

The male wood duck has an iridescent “slicked ... Learn all about the common mallard duck. Wood ducks eat aquatic plants, acorns, beechnuts, grapes and berries, as well as a few insects.