I just ordered 15 chicks, they are supposed to be all females. I understand that determining the sex of a one-day-old chick has an accuracy rate of about 90 percent so I am anticipating that I could end up with 2 roosters (possibly more). My question is: If I divide my chicken yard do I need to have a solid barrier or is a chicken wire divider sufficient? The yard is about 440 sq ft so I know that they will have enough room even if the divide it into two sections. So does that seem like a good plan or do I need to set up another chicken yard and coop? Thanks in advance for any comments/advice