I hatched a lone chick. So today I got a second chick. They are about a week old. How do I know if their behavior is normal or if they are beating each other up? One chick keeps pecking at the other's legs and trying to go up under neath the other one. I don't want to wake tomorrow morning with a very sick or dead chick because the other was beating it up. I caught the original one pecking at the other on the neck while it slept. I just don't know what is normal chick behavior vs what I should look for that is not so nice behavior!