Nice, this was really cute, I didn't expect the bird to fly in peck on the space bar! Liked the concept and I think some small quality of life improvements would be helpful such as making the jump on the very first level a bit less tight (since it is after all, the world's easiest platformer, maybe you don't even have to jump). Another small thing would be to add a horizontal line for the moving platformer in the second level to help the player visualize when it'll turn again.