I hatched a chick a week ago and he has been by himself in the brooder for the past week. However i had 4 more hatch today / yesterday and so i added them to the brooder today. At first he was petrified of them. But then he got used to them. However now he has started to peck at their eyes. He goes up to them and peers round especially to aim at their eyeballs. Is there anything i can do to encourage him to stop this? I'm worried i am going to have 4 blind chicks by tomorrow .