I am curious what are bad food for ducks? I have a pekin that is 2 years old. I feed him pellets, lettuce, tomato, mushrooms, fresh veges (corn, peas, carrot), grapes. Is any of this bad for him? I am aware mushrooms and grapes are bad for dogs, but are they good for ducks? Is he getting enough nutrition from what I am feeding him above? As that is all I feed him.