We have a female turkey and some ducks that get housed together at night. R turkey has selected a duck to pick on. One time she pecked at its eye so we separated them. They roam the yard together during day and she's fine with them then. We needed the space and started housing together since they were getting along. After a week she attacked the same duck again to the point that its now blind. Why does she only pick on this one duck? She leaves the others alone. She is normally very gentle and will follow u around like a dog wanting to b petted.