This morning I opened the coop for my flock to free range and my 1 year old EE roo chased down and mated my 14week old pullet. He has never even paid attention to her or my other 14 w pullet. They have been in the flock now for several weeks. She was screaming, running, flying all trying to escape. I managed to grab her only as he mated her. Is this normal? What do I do?