I liked the graphics and music, but it was just too hard for me. Platforming on a keyboard is already a little difficult, but the birds made it impossible. I never saw the second screen. Slower birds, some kind of warning, and/or even less knockback would make the game more playable.
Also, I thought you had to collect the falling things at first (they look like gold nuggets), but they're also obstacles, which wasn't immediately clear.
It was fun for a while, but discouraging to get really high up and then get one-hit KO'd by a bird knocking me all the way down into the thorns and forcing me to start all over again.