Please, has anyone invented a water holder that ducks can't get their bill in. I have several water containers for the ducks and I also have one standard hanging chicken water container with the narrow channel around it. The ducks muddy that up every few hours as well as their own containers. I have 3 hens and a rooster and 2 female swedish blue ducks who all cohabitate. They all get along famously but i need some advice on how to keep the ducks from getting into the chicken waterer.