Absolutely beautiful. I loved the use of 2D and 3D, the music also adds up to this peaceful experience. It's a little laggy sometimes, but I believe it happens since it's running in the browser. Congrats on the work!
The lagging birds does seem to be a browser issue for the most part since it was working fine in the Unity editor, but I'm sure there's a fix we can find somewhere in there to avoid it :)
