Cracked corn.  Wheat, barley or similar grains.  Oats (uncooked; rolled or quick).  Rice (cooked or uncooked),  Small fish and fish eggs.  Snails, worms and mollusks. Small crustaceans.  Grass and weeds.  Algae and aquatic plants and roots.  Frogs, salamanders and other amphibians.
Wild ducks eat a wide range of different foods and they are constantly foraging for meals and snacks. Foods ducks regularly eat include: 1  Small fish and fish eggs. 2  Snails, worms and mollusks. 3  Small crustaceans. 4  Grass and weeds. 5  Algae and aquatic plants and roots. 6  Frogs, salamanders and other amphibians. 7  Aquatic and land insects. Foods Ducks Eat. Wild ducks eat a wide range of different foods and they are constantly foraging for meals and snacks. Foods ducks regularly eat include: 1  Small fish and fish eggs. 2  Snails, worms and mollusks. 3  Small crustaceans. 4  Grass and weeds. 5  Algae and aquatic plants and roots. 6  Frogs, salamanders and other amphibians. 7  Aquatic and land insects. Ducks have special features that make it easier for them to get food. All ducks have waterproof feathers that protect their down under layer while they in the water searching for food. Ducks also have bills that are shaped differently depending on the type of food they like to eat. Many of these foods are similar to the natural seeds, grains and plants the birds will forage on their own. As omnivorous birds, ducks will eat a great deal of different foods, and the best foods to offer ducks include: 1  Cracked corn. 2  Wheat, barley or similar grains. 3  Oats (uncooked; rolled or quick). 4  Rice (cooked or uncooked). 5  Milo. 6  Birdseed (any type or mix). Most people aren’t actually aware of what do mallards eat. These kinds of ducks primarily feed on gastropods as well as invertebrates. A roughly estimate is that males eat 37% of animals, whereas the plants comprise 63% of the whole mallards diet. Females usually eat 72% of animals and 28% of plants.
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