I have a Peking hen that I recently obtained from someone. She cannot walk as her feet turn in on her and she uses her wings to support herself where ever she manages to hobble to. I wormed her with Wazine immediately. She is eating and drinking well though she is very thin. She is also very interested in swimming and preening herself in the little pool I have given to her and her sister. Her sister has no symptoms like hers and they have been together since they were ducklings. She seems happy but how she walks just breaks my heart. I have been administering the enfamil liquid vitamin to her twice a day for two days with very little improvement. I next plan to give both ducks some oyster shell and brewer's yeast to be sure I have covered all bases. I am sure it must be a nutrient deficiency or something as she is otherwise normal. Any advice is greatly appreciated. Neither duck is currently laying though I would not expect her to be in her state.