I love that someone else decided to go with a conservation oriented take on the theme .  The soundscape and visuals were great, but as alot of others have said the frame rate lag is a little brutal.

Also, maybe it was just me, but is their any way to exit the game after the start menu? I tried using the escape key but no dice.

For some reason the movement of the butterfly was choppy even though everything else seemed to move smoothly, like the clouds. I love how the winds were illustrated.

I found it really clever the way you managed to represent dodging air currents!  The transition to the game over screen is a bit sudden though, it does break the nice ambiance a little bit!

For some reason the game lagged a bit on my computer but other than that it was a really nice experience. 

The mood throughout was very serence and consistant

Also i love the visual effect when the clouds cover the screen, it was a really nice touch!