This is a pretty fun idea. Looks good, sounds good, very easy to understand.
I echo what others have said, the movement is too stiff and the perspective is difficult to work with. I'd recommend having a bit of acceleration to the birds movements to smooth out the motion and either move the camera back, shrink the bird, or have some kind of outline to better see the pipes.
It bugs me that hitting the left/right arrow after I've moved all the way to one side triggers a jump. At first I didn't understand that's what was happening as I was jumping directly into the ceiling and losing.
Getting a point and then immediately moving left or right should have more forgiveness - maybe disable the colliders once you get a point?