My chicken started getting lethargic two days ago. I brought her inside yesterday as I noticed she was starting to be unsteady on her feet and sleeping a lot. She has only gotten worse. She has been sleeping with her head twisted back like this and periodically has episodes that appear to be seizures where she shakes her head and falls backwards. I have given her vitamin supplements, electrolytes and eggs. I don’t know what is causing this and seeing her in pain is killing me. Any help is appreciated