Cornish cross are like special-needs chickens. Mine lived over two years and she would have lived longer, but she got killed by a animal. I advise you to not give him an automatic feeder, and to not give him a unlimited amount of food at all. They will overeat and their legs may break and they can develop health problems. Give him a large area so he can run around. My Cornish cross was my favorite pet I have ever had. So I purposely got another one lol. She is 4 months and doing great!! Cornish cross seem to get overheated quite easily, so make sure that he has shade.