I tap them on the head with my finger like an adult bird would do as a reprimand. It seems to work.Thank you for the replies! Unfortunately, I thought the more you handle them as chicks the better they behave themselves when they grow up. So I've been holding him and petting him a lot, carrying him around and stuff like that. I guess that's got to stop now. I've heard that if they peck your arm as chicks, you need to train them not to do it right away. (Never happened to me, but he did it to my mom once). How would you do so, or does it really not matter that much?