I think I have an intreasting question on my hands. Ok well I read somewhere that a roo will only breed hens that he finds are suitable. Someone put a big Tom turkey in with a tiny sebright and not once did he try to mount her. Hence the fact he didn't think she was suitable. So I have a big New Hampshire red with a flock of 13 hens. Out of those 13 is a small Golden laced Polish and her sister a Bantie mix. They are 5 months old and he doesn't take any interest in them doesn't even try to court them. Even though they are not of age and don't have the respect for him yet would he not see them as mate due to size?