He is an exotic vet. He was better than my dog's vet lol but he had knowledge of chicken diseases and did a fecal test. I think he's the best I could expect but I still haven't reintroduced my hen because I trust my intuition. She has been with my other birds before the sneezing and they haven't caught it so I am thinking she is just weaker because of the initial infection (which she got over more than a year ago) but still not taking any chances.What kind of vet? If it’s just an avian vet that takes chickens, they aren’t trained to learn about chicken or poultry specific diseases.