I'm glad yours stopped I'm not trying to take sides start a war. I just wish I could stop this behaviour & guess I'm desperate. My old roo taught the girls the behaviour & I should of gotten rid of that big drumstick then but I didn't. He's gone now & I've curbed the behaviour but thats about it. So trying this product might help I don't know for sure but one things for sure who does? No one exactly know's how to stop it I can honestly say that ?I don't know how to stop them, mine did it and they stopped just as quick as they started and i didn't change anything. chickens are weird, just when you think you have them figured out they change. just like deer lol