It may also have rapid weight loss due to lack of appetite. [substeps] The infected parrot may also vomit or regurgitate its food back up when it does eat.
[header] How to treat polyomavirus in caique parrots [title] Notice if the parrot has a loss of appetite and low energy. [step] One of the symptoms of polyomavirus is that the bird will stop eating and have low energy. It may appear depressed and lethargic.