I have 8 BO and BR.. one is a runt who I think is a roo and 3 other roos they are all 12 weeks old. Today I got 3 EE hens that are about a year and half. The lady I got them from said she never had problems introducing new chickens and they hers were non aggressive and if mine weren't they shouldn't have a problem. Mine are not. So I brought the new ones in the coop in a plastic dog crate and went to eat lunch.. After lunch I tired to let the new girls out.. 2 of them stayed in the crate but one came out and after walking around the coop a bit came into the run with the other chickens. Almost right off the bat my she came in and started to establish her role as alpha. she pecked at a few who tried to fight back till my Alpha stepped in. It was quite a battle. I let it go on for a bit even thought it scared me they kept grabbing face and neck feathers and pecking. I broke it up when I noticed blood on the new girl's comb.. after I also noticed a few spots on the roo. Should I have let them keep going? it seemed like nether wanted to give up although the roo was sort of winning. Did I just try to soon?I'm a little lost.I knew they would have to do some pecking to figure out where everyone fit but goodness.. It felt like it went on forever.