So my Ameraucana pullet that I purchased from poultry hollow a few months ago. She looks healthy outwardly but something isn't right. She stands in a dazed trance. She will not roost. She walks, eats, drinks, and poos normal. What would cause a chicken to act so dazed and lethargic but have no outward signs of disease? She acts so confused sometimes and hardly ever moves from place to place but can otherwise walk fine. All other chickens are healthy.