I have 3 mo old chicks that I have had since they were 2 weeks old. At 6 weeks I put them in a cage in my coop so the 4 old girls would get used to them. They are about 1/2 th size of my hens, but getting to large for the cage. I know the hens will go after them. I was thinking about putting 4''x4'' stock fence to partition the coop. I thought the chicks can get in and out of the stock fence, but the hens can not. Any thoughts? Thank you in advance.