Okay, at first it started off with what seemed like an aggressive chase around the pen and cool until the girls would fly up where he couldn't get at them. I questioned that and was told it was because he was horny. Now it's turned into picking. Not a flirty picking. More of a "This is my space! Get out of here!" He bites and pulls at the feathers of the girls until they go where he can't get after them. Why would a rooster act like that toward hens? He will be 6 months on the 21st, and they will be 5 months on the 12th. They aren't laying yet. They are still smaller and thinner. The brown one has a bigger comb than the white one, and it is starting to tip over at the top. Not really red. Maybe a pale red - pinkish. It's only just started to tip. And she's the smallest of the three. The roo is the biggest. Here's a pic of them (from before the tip started ... tipping). (Again, it's only the tip of the comb starting to tip over.) But my question is... why is he being mean to them rather than trying to be... Oh baby! with them?