Hello everyone, so my cockatiel is male 7 years old. He does recover from hepatitis, And I did notice that He started to bobbing his tail while breathing. He does this kind of sound when you try to breathe with full nose. But I did checked his nosedrils And there is nothing inside. He normally eats, drink, He is more sleepy than usual. My avian vet did say that his breathing seems normal to him but if I want to He can out him Under anesthesia, but Im worried He can pass away so I wanted to ask if there is different way to check up his respiratory tract. + thanks to the hepatitis he was getting antibiotics. So my question is should I worry? And is there any way to check up on him without anesthesia? He is not coughing, sneezing. He just Bob his tail And does this lil sound.