I am always concerned about my cat getting my 4 hens when they free-range. I let the hens out every evening for about an hour and I just let them put themselves to bed at dusk. My cat is an older girl and is starting to show signs of slowing down, but she still brings me presents like mice, and birds, and lizards - the usual. I got the hens when they were full grown and the cat wasn't sure what to make of them - she didn't know whether to eat them or play with them. She would just lay in the tall grass and "watch" them intently. One time I caught her sneaking up ever so slowly on one of the banties and I called out her name in my mean mommy voice and she stopped in her tracks and went and laid back down in the grass. I think my cat got the hint that the chickens are friends and not food and that she should probably leave the chickens alone as to not upset Mommy, hehe. She is a good old girl