About 2 weeks ago one of my pullets stoped walking. it seemed to happen over night. at first I thought she hurt her leg somehow. Now I think she may be sick. It seems her foot wont bend. When she tryes to walk she walks on her toes. She also act like she cannot see, or see well. she runs into walls and stuff. Anybody know what could cause this? She is a hatchery RIR about 6 months old. Eating and pooping fine. I think if she does not show inprovment by the weekend I will have to cull.