6 days ago I found my 12 week old Aricauna lying on the ground with her neck limp. When I picked her up she couldn't lift her head. I separated her immediately and helped her drink some water and gave her some food. She picked at it. I was sure she would die overnight but the next day she was able to lift her head but she staggers around when she walks. She stays mostly in the corner of her crate but occasionally ventures out into the grass inside a small outdoor enclosure I made her. She seems bright eyed and alert, Is it Marek's? None of the others her age appear to be sick.