FWIW, good knowledge on avian, pocket pet, etc. diets is not readily disseminated in vet school. Also depends on which school you end up at too. Even so, I went to a verrry exotics/zoo heavy school and I didn't think we spent enough time on diets in my exotics/zoo electives. A lot of reputable brands offer great educational info geared towards vets, but there is usually a subtle sales pitch in those resources too. It's hard to find good, peer reviewed diet info for exotics. But I'm also a nutritionist wannabe so it's never gonna be enough lol.
Some of the more legit bird nerds and herpers can spout off some excellent wisdom about husbandry/diets but they're the diamonds in the rough considering how many random blogs, groups, pet store employees and threads are out there with people talking utter nonsense.