I let our birds out every morning so they can free range about the house during the day. The last couple of weeks our cockerel has developed a rather mean habit of attacking me when i let the out in the mornings. I have no idea what I'm doing to upset him. All the other hens and happy and follow me about when I out in the garden in hope of food. He's doing it more and more, and actually came at me 3 times this morning. It's not that it hurts I'd just rather he didn't. any suggestions?