I am going to be getting a rooster soon, as of this moment my flock is incredibly varied. I have 14 birds and 12 different breeds. I had planned on getting a rooster (surprisingly none of the babies I got from my local feed store have turned out to be roos) and breeding my own babies next year. When I mentioned that at the local feed store the gentleman there strongly suggested against it. He said that often times cross breed chickens have a lot of issues. To me it seems like it'd be the opposite, genetic diversity is typically good. Was he saying that so that I would continue to get chicks there or has anyone actually had issues with cross breeding their birds before?