Up until the other day I had 6 barred rock chickens. They were free range, but a dog got them. One survived. I know that you can't have only one chicken so I need to find out about getting more. I would like to get only a few for now and a few more next spring. We are getting a fence so that it won't happen again!! My question that I need help finding an answer to is do I have to get chickens that are around the same age (about 15 weeks) or if it is okay to get babies? Any help with this is greatly appreciated!!