I have three cats, but one is an immature, about nine months, and he's been stalking the chickens. I have two four month olds...one a Plimoth and one is a RIR, the other is about three months old and she's a frizzle Wyandotte. So far he chases them around the yard and hasn't caught them. I try to keep him in the house when the chickens are free ranging, but some times he maneuvers himself out with foot traffic. The other two grown cats ignore the chickens pointedly. What to do? My dad informed me that a chicken can take care of a cat. Will he grow out of this? Are the chickens able to defend themselves?