all my hens are about 5 months old. i have 8 RIR and one buff orp. i have a few mean RIR they peck me sometimes. but the rest are very nice. my roo is older, im not sure how old. i bought him at a flea market because he was extremley gorgeous. i found out hes an american game roo. he hops on em and dominates them. they freak out. being that he is doing this and they are only 5 months old will this have an impact on them? would it cause any problems laying later on?