generally i won't put them together till they are close to the same size, you could section off an area with the big ones and see how they doLots of run maintenance to do today, due to too many flies. Considering putting my 8 week old BRs in with the bigger girls. I'm not sure, but I thought it might be a good idea to try to get them together before the older ones start laying. I've been paying close attention to the integration thread that's been going. Any of you ever have trouble getting little ones in with the big ones? Times like this, I wish free ranging was an option for my girls.