I've noticed that lately my budgie has been sneezing a lot for the past month of so, a couple times a day as far as I've seen. Sometimes let's out a string of sneezes which makes me think it's some sort of respitory infection. I watched him for other signs of illness like lethargy and shallow breathing but he seems really active and happy most of the time. I was going to give a poop sample to the vet to test, but because he seemed so normal and the test was very expensive (£200) I decided to hold off on it but I'm thinking of just going through with it to be sure (or just take him for a checkup). Does anyone else's parrots do this? How can you tell if it's normal behaviour or something to be concerned about?