I like having purebreds, but since I haven't kept my RIRs and my BOs separate and I have one roo of each, I'm sure a few of the eggs I may be crosses. I'm not a breeder, obviously, but I'd like to hatch more chickens for egg-laying and to add to the flock, and I'm wondering if there are reasons NOT to hatch eggs that may be crosses. Or reasons TOO have crosses. One roo is purebred RIR, but the hens are actually half RIR and half (i think) Plymouth Rock. The other roo is pure BO as are those hens. Opinions?