I found my pullet spazzing out in the pen today. I picked her up and she's trembling. I brought her inside and she was walking around, just trembling a little. She drank electrolyte water on her own. A few minutes later she seemed to have a seizure. Her head curled up to her body and she was flopping around. Kind of like they do when they die. It stopped after a few seconds and she got up and started walking around again. Still trembling. Did not notice a problem with her yesterday. Her pen mates are acting normal. She's about 4-5 months old.