that is so sad. i feel so sorry for those chicks.
My hen was not born with it, and we noticed it when she was about... maybe 3 weeks old. it has worsened, and she only occasionally gets food from the ground. we feed her any liquid like things (yogurt,mashed potatoes, guacamole, french onion dip, and so on) and she occasionally gets worms (go chickie!). i am actually very worried she is slowly starving to death. oh well. she seems okay. i don't want her to die from starving. i've known her her whole life.