I'm trying to save my cream crested leg bar. We got her this July 2023. She was lively on Sunday. On Monday she wouldn't stand and eyes were half shut. We thought she was dying. Tuesday she laid 2 eggs, it was her first time laying, so I assume she had inbound eggs. I tried to feed her, but she just sleeps. I brought her inside and has been trying to give her yogurt, egg yolk, crushed calcium with sugar water. Is there anything else I can do? I'm also researching about Marek's disease. My rooster might have died from it and maybe that's what's making my hen sick?