Abstract Thursday: "Natural Surprise"

As usual, I took today's photo without checking the Abstract Thursday theme... I can just about make it fit, though: I pointed the camera down at the burn (that's "stream" for the non-Scots ;) where autumn leaves were swirling about ("natural") and took a longish (1/8 second) exposure to see how it would come out ("surprise"!! :)

The shot is pretty much straight out of the camera - just a little cropping and tweaking of the levels.