Last year we adopted a 4 year old Indian Runner drake named Sonny. He loved hanging out with our hens so we thought wed get him a girlfriend. We rescued a Muscovy that initially we thought was a hen but who turned out to be a drake. At first the Muscovy was great to have around. But as he got well he turned out to be the nastiest creature to have around becoming very aggressive towards our chickens and our daughter. Hes even attacked me and my husband. His nastiness has rubbed off of our Indian Runner so now we have 2 hostile birds that take it out of the chickens pinning them down. Saturday I let the birds out to free range, which is normal. We left to run a few errands. When we came back a short while later the ducks were coming out of the chicken coop (which is a first). We opened up the coop and found one of our hens literally beaten to death by these two ducks. I have put the ducks in their pen permanently. We plan on butchering the Muscovy and will see if the Indian Runner comes around. If not, his fate will be the same. Has anyone else ever had something like this happen? This has been very traumatic for us because we adore our chickens and would never intentionally put them in harms way. We would love to hear from someone who knows more about ducks than we do.