I have some breed of chicken. Don't know what it is. Supposedly they are the male "leftovers" of a company that was hatching for some type layer chicks. They gave us the males I guess. Anyway... In the beginning, we listened to bad advice and underfed them. In fact, they were not growing that much then. It wasn't until I was researching some bad behaviors they were doing that I realized that they were underfed, so about a 4 or 5 weeks ago or so we significantly increased the amount of feed. For a while, they really grew a lot. Now they seem to be stuck at their same size for 2 - 2.5 weeks or more. They are 3.5 months old. Do chickens plateau like this in size? Could underfeeding them previously have affected their growth rate and caused them to stop growing?