I have 15 hens and 1 rooster. They are now 22 weeks old. They have all been friendly up until a couple days ago. Now that my rooster (Glen) is sexually mature he is getting aggressive toward me. He's trying to grab me with his feet to claw me. He's a Columbian Rock cross-if that makes a difference. I don't want to cull him. What can I do to keep myself safe?