Aspirin
Dissolve five (5 grain) aspirin tablets in one gallon of water.
Offer this solution free-choice to the birds for the duration of an illness. The solution aspirin equivalent to 25 grains/gallon or 324 mg/gallon of drinking water. The dosage rate is about 25 mg/lb body weight per day.
Capsicum cream (made with cayenne pepper) is also good for reducing inflammation. But *do not* use while treating with aspirin.