Is there anything ducks are NOT suppose to eat? Forgive me if this has already been asked. I know raw potatoes, moldy foods, junk food for people and the things like that are not good. Other than duck food, corn, and ground up egg shells (for the girls), they only get vegetables, cat kibble, clover, tree leaves, grass, and bugs. What about tomatoes and uncooked corn and beans and more? Thank-You!!