My hen had rickets pretty bad. I have been treating her with Poly Sol and yogurt. I thought I might have to cull her as she didn't show any signs of improving. She got real good at getting around on her hocks so I thought I would let nature take it's course. Last night after her vitamins and a few pets she walked when I put her down. On her feet for about 10 steps. When she came out of the coop this morning with her sisters she walked again. YEAH. Thank you to everyone who helped me figure out what I needed to do to treat her condition.