Welcome to BYC. I'm sorry that your pullet was attacked. Hawks don't always go after grown hens due to their size, but they can really do damage to or kill young chickens. Examine your pullet for any puffy areas under her skin on her body that could be a leaking air sac that can happen with trauma to the neck or chest. She may have suffered a head or neck injury. Put her on some poultry vitamins with electrolytes--Poultry Nutri-drench or Poultry Cell are both good ones that contain both vitamin E and selenium. Those are good for wry neck. Getting her to take liquids now is more important than food. Look her legs over for any signs of bruising or swelling. She may be in shock for awhile, so keep her quiet and in dim light. Hopefully there are no internal injuries.
Edited by Eggcessive - 11/15/15 at 7:19pm