I've had my 12 chicks for around 2 weeks. There are a few that are a little older than the others. But I don't know if this is a factor....ok back to the point. They are all sort of pecking at each others feathers and beaks. Is this normal? I don't see any bald spots or anything. They just peck at each other. Maybe I'm just a paranoid new chick mommy but I'm a little concerned. Anyone had this happen?