Hello, this is AndyJ08. I’ve seen threads such as “Populations of ___ in American zoos”, and I’d appreciate another that focuses on populations of passerine birds in zoos and aquariums in the United States. Does anyone have any species lists?
There are these, if that's the sort of thing you're looking for. Not a complete overview of the passerines but covers quite a lot of the regularly kept groups. All are a little outdated but still give a decent idea.