My kitten, who is about half grown, loves to chase my hens around the yard. The silly girls are terrified and just fly everywhere. I don't want to hurt the cat, but I don't know what to do since he doesn't respond to yelling or being sprayed with water. I mean he might stop for a second, but turn your back and he's right back at it. He likes to run across the top of their pen, too. Will this behavior stop as he gets older? Our last cat came to us grown and he never payed the hens any mind at all, so this was a shock to me. What to do??