This is the third "Flappy Bird, but..." game that I've seen from briefly scrolling through the random game screen, but this game took it in a clever direction. It's really more about the user trust mechanic, and Flappy Bird works well as a simple game to apply it to.
Minor interface-design thing: I read "Drag the opaque bird to control it." And so I did that. But then all of the other text (that I hadn't read yet) disappeared instantly.
Is there a reason the player needs to be holding left click the entire time? There really isn't a point in the game where you would want to not be dragging the bird. Constantly holding left click was starting to tire out my index finger.
It's too bad the game doesn't scale difficulty as you get further into the game. It works perfectly that when a Flappy Bird style game gets harder, the human player messes up more. But since you can't mess up, you end up losing confidence while the ghost bird is going through the pipe. I got to 90 before I figured the game wasn't going to get any harder and stopped.
When thinking of ways to expand the game, I came up with this game idea: You play a whitehat hacker who just hacked into someone's phone, but the vulnerability only let you control their touch screen. So you have to respond to their inputs to keep up the facade (and prevent them from getting their screen fixed), but it turns out they're doing evil things on their phone. So you have to decide whether to risk losing trust to prevent them from doing something bad in a Papers Please/Not For Broadcast type of moral choice game.
Anyway, this was a fun little game with a cool mechanic. Nice work!