well this wasnt much help but they live all over the world and they of course live next to lakes and ponds
Mallards live in the northern United States and Canada and winter in the Southern United States and Mexico. Then Wood ducks live in the Southeast and along the Pacific coast year-round, then go north in the summer, The highest population is along the Gulf Coast and the Atlantic coast south of New Jersey.
Their diet may include worms, slugs, roots, frogs, insects, snails, fish, plants, crustaceans, and more. this is from
this is Bothell.gov
image from creazilla the duck one author unknown
sunset photo from unkown and author unknown