I recommend watching this in full-screen HD with this as the sound track: youtube.com/watch?v=QXnkAnmAOEc
Start the music first; it is much longer than the video. You can loop the video by hand.
This is a rather long time lapse, sped up tremendously by a frame averaging script I wrote today in Python. Python is very cool and powerful. It made this video run three times faster, more smoothly, and in a smaller video file than otherwise possible.
"Nature imitates art." Ha! If you think I really think that, well, FAIL. >;-) Nature just does this, right outside my bedroom window.