I have 7 full size older hens and 1 littler Serama Rooster. They range in age from 3 yrs to 1 1/2 yrs.. I will be introducing my pullets of 9 and my little Polish Roo. They are 3 months will be 4 months the 23 of Sept.. They have seen each several times through protective cages and there has of course been some chest bumping through the cage.. for the last few days I have put them in the enclosed run next to them so they get a better look.. They have not free ranged together yet. Some of them are the same size as the girls. a few are not.. My concern is the 2 roo's, The polish is already bigger then my Serama.. I do know there will be fighting but i do know there are many that have done this successfully.. My question is when do you think I can actually put them together.. Thanks for you responses..