I have 8 Leghorn hens, 2 silkie hens, 1 wonderful Leghorn roo and 2 Barr Rock mutt juv. roos . They have a very large coop and run and haven't had aggression out of anything but 1 of my silkie hens.( the smallest one of course) I have a large pen in the back of our coop that I have housed 11 additional hens EE, Delawares, Australorps, Sex links for the past 2 weeks. Everyone can see each other but they can not touch. My questions is how long do I need to keep separated before releasing? I raised these as chicks and range from 12 weeks to 18 weeks. I love my birds and want to do this the least stressful way for my birds and myself. Sorry so long. Any input would be greatly appreciated!!