I have four muscovy ducks including one drake, "Lucky". They are young: around 9 months old and are mating. I also have two old chicken hens. Yesterday I came home to a dead hen, apparently killed by an attack to her neck. My remaining hen was totally freaked out; running and squaking. I believe my drake is the culprit. I allow my birds to wander around my well-fenced backyard during the day, and put them in a wire "yard" and house during the night. Do you have any suggestions about how to keep both ducks and chickens peaceably? Or has Lucky become Not So Lucky?