When you reach for a hen and he darts a little peck at you, just lightly slap, or cuff, him across the side of the head with a cupped palm. It doesn't have a hard impact but has the effect of a cold glass of water to the face. Sort of like popping a kid in the mouth for sassing....it doesn't...
he has no qualms with who is around when mating, our 10 yr old granddaughter this weekend told him to "Knock it off"
I don't allow my roos to mate in my presence. I always knock them off if they try. The dominant roo in a flock will never let others mate his girls if he can stop it in time...