The mysteries themselves are quite simple and the unique mechanics behind them (notably the time limit and the fact that the game continues even if you fail your cases) don't get much usage as a result. And while they can be fun in the moment-to-moment experience you probably won't be scratching your head at any point while thinking of a solution.

Normally I would care a lot about that lack of depth and mechanical complexity, but I can set it aside in this case because the game does a great job of compensating in other areas. The old-fashioned visuals, music, and dialogue all mesh with the setting and story in such a strong way that it feels oddly immersive despite being a bunch of animals in Restoration-era France. The core story was far more political than I was expecting given its silly initial premise and the game did a surprisingly good job of handling the topics it brought up with nuance and compassion.

So even though Aviary Attorney was quite weak in the aspects I initially played it for, I still enjoyed my time with it overall because of its strengths in the areas I normally wouldn't focus as much on in a mystery game. So you may want to adjust your expectations accordingly before you start playing, but it should still be a good time regardless.