Our one-year-old rooster watches over a flock of ten free-ranging hens. He has been great for the last ten months: friendly, gentle with the ladies, a wonderful protector. The last two months he has started attacking my daughters and my husband. They are my chickens, and he still respects me. But when the others walk past him, once their backs are turned, he will attack. I thought it might be because there were young roosters in the flock, but we took them all out and processed them, so there are not any more. There are five guinea hens in the coop....not sure which are male or female. They are obnoxious, but lower on the pecking order than the rooster and all of his hens. Any ideas why he has turned aggressive in the last few weeks? He still acts the same with the hens...does a great job with them when they are out. We do live in upstate NY and it continues to be freezing with still a foot of snow on the ground. Last week the hens started a petition: Chickens for global Warming. Even the cats signed. Thanks for any ideas. He's a gorgeous rooster that we all really like, but I can't keep him if he keeps attacking my pre-teen daughters and hubby.