Well our rooster is one year old and he is fine and doesn't seem to care about what is going on. We have five rhode Island reds that are 5 mo's. Then we have 7 rir and a couple of others that are 4mo's. We raised these guys since 1 week old. We expanded our coupe today in order to house up to 30 birds and we put them intogether and the 5 mo's olds are pecking the 4mo's olds heads and won't allow them in the coupe. The four mo's olds seem terrified and are trying to get out all together. What do I do or is this normal?