Hello all. Was hoping for some community wisdom. Our beautiful Peachy (7 month old bantam buff brahma) is acting weird. Circular Twitching/shaking/spasms of head and neck. We checked crop - seems to be fine. Comes in waves - will do it for a few days, then will seem to get better for a few. Been going on about 2 weeks now. Poops are small, but seems to be eating and drinking (but not a lot - doesn't peck the ground much - just kinda sits there). She seems tired. Not sure if she's laying. I tried to attach a video from our "ChickenCam" but I guess I need social media (which I don't have). Full disclosure - we're pretty sure that Marek's got into our flock (and Peachy wasn't vaccinated at birth) - and are worried this is a different manifestation. Any thoughts?