I have a male cockatiel, Ollie, who is about 6 years old. About 2 weeks ago he started sneezing and coughing alot which then resulted in very heavy breathing (he had to open his beak to breathe). i took him to an avian vet who said he had a respiratory disease, gave him an injection and prescribed doxybiotic to be gievn to him by mixing one spoon in 1 litre of water. I did this and ollie improved dramatically and was almostback to his normal self and the sneezing and coughing had stopped completely, once he had completed the course of doxybiotic. However, this afternoon he has started with it again just as badly if not worse than before, should i take him back to the vet? is there anything else i can do? i have also started putting a humidifier in his room at night and thought that might also have helped, should i continue to do this?
any input would be greatly appreiated, thank you :-)