I took Birdie to an avian vet today rather than waiting till the end of November. She has gained a slightly musky smell and has been sneezing occasionally. Last night she was also acting funny, didn't come when called, lots of slow eye closing and shuffling around uncomfortably. It really worried me so I pushed her yearly appointment up. Granted, it was late at night and she could have simply been sleepy, it still worried me. Aside from last night, she has been as active as always and doesn't seem to be lethargic at all. When I took her in the vet said everything looked great. She's a perfect weight, lungs sound fine, heart sounds fine, physically perfect but she did have a red throat and the vet is worried she may have some respiratory irritation/ infection and gave her an antibiotic shot. She said she didn't think it was Chlamydia since she had no access to other birds and non of us have been sick. She gave her the injection and told me to watch her and come back in a week if she's still sneezing, sooner if she has labored breathing. My question is, what could cause a respiratory infection or throat irritation? Any advice would be great!