I have two mallard drakes, and"had" one tom Turkey, one rooster and several other hens, almost once, maybe twice a week I find one of my chickens dead, or half mutalated and almost dead, would this be the work of the ducks, I figure that my Tom Turkey may have been bought with some sort of a disease, being I bought it at a poultry show, and only had him a,few weeks, but a rooster gone and hens being killed, my only guess is the ducks, does anyone know if this is possible