You need to get your bird examined by the veterinarian for proper diagnosis. If air sac mites are found to be the cause, anti-parasitic medicine will be administered to the bird orally or by injection. If treated early, your bird should recover from the infection.
Any type of arachnid excluding ticks
An avian term; refers to pockets in the respiratory system of birds that hold air and allow them the ability to fly and the buoyancy necessary to do so.