HOW TO TREAT MY CANARY FROM SITTING ON HIS BELLY WITH HEAVY BREATHING

by David Qamar
(Ancaster, Ontario, Canada)

I have a wonderful American singer canary with long beautiful singing tones that was full of energy, two months ago my daughter went into a trip and brought me her two canaries, after a week my canary stopped singing, he spends most of the day sitting on belly with heavy breathing, he eats well and bath every day, I am wondering if he got some kind of mites or other disease.
I appreciate your help.