I have 2 RIR's that are about 7 1/2 months old maybe. just purchased 2 Golden comet/red stars that are maybe 20 plus weeks old and laying. My RIR's are very nasty to the new comets. they stay in the coop most of the time. I have had to use a small soft plastic 6" leaf rack to kind of stop the stuff today after a few days of fighting. I hope it will get better. but any somments would be appreciated. I have to let them haqve access to the coop and nest box area so separating them is not an option and also due to the setup I have too. Thanks.