Yes, thats how chicks are, I think it's probably natural instincts. We have cochins and my chicks run terrified of me, but my grown chickens always run to greet me so hopefully yours will grow out of it too. I even raise mine in my bedroom for the first 2-3 weeks with constant attention. I did have one friendly chick but he was from a bum hatch and was the only one so he imprinted on me. He would cry at the top of his lungs when ever I wasn't right there next to him. When I would finally give in, he would leap from his cage and dash towards me. So, yes, it seems if your chicks have each other, they will be scared, but if you work with them, I'm sure they'll be plenty friendly as adults.