The easiest and cheapest food of all: just let your ducks forage! They will scout through the grass for bugs, worms, grass seeds, leaves, and anything else they can find that's edible. They just need a large, grassy pen. If it is too small, they will eat everything and soon have a miserable, muddy pen.

What can I feed ducks if I don't have duck food?

A bag of frozen mixed peas, corn niblets, and carrot pieces is one of the best options for waterfowl: these veggies are nutritious, affordable, and small enough for ducks to eat whole. Grains like oats, rice, and seeds make good waterfowl chow for the same reason.

Can ducks be free fed?

Feed should be offered free choice throughout the day along with access to plenty of fresh, clean water. An adult duck can drink up to a half gallon of water every day, so make sure you are checking the water levels often. The feed bowl should be emptied and cleaned every day.