Go figure. I thought only Bobs were mean like this. I put a new coturnix roo in with three hens and one hen constantly pecked the roo until he was missing feathers but no blood. I removed the mean hen and isolated her for two weeks. Today I put her back with him and the other tow hens in a GQF breeder pen. I went back three hours later and the roo had just about pecked the mean hen's head to the point where i don't know if she is going to make it. I guess paybacks are a grump. Any other explaination to that? I think I'll stick to keeping my quail together from the hatch instead of mixing in new adults. Keeping all my layers for a year, and then put them in the freezer when my new batch starts laying and repeat process. Is that the norm to maximize egg and meat production while reducing pecking and meaness towards each other?