i got a new hen today, a red cochin. She is older than my six others. They around 5 months. She is sround a year old. She seemed to be very sweet on the ride home. Then I let her in with my other chickens. She took controll of the coop very fast. She is quite agressive towards the other girls. Tonight I checked on them whil roosting in the coop. All six of my other hens were on one roost and she was alone on the other. I know this is a pecking order thing, but should I be worried? even in the run, where the new girl is the rest are not. If one of them gets close to her they soon get run off. She is definately the alpha hen at this point. I will see how they are in the morning.