There are almost too many pleasing elements in this image. You've got the shoreline, which twists and curves and has nice textures, then you've got the rainbow and it's partner, the reflection in the water, and then you've got the bird and its reflection in the water, plus that amusing little swirl in just below the center of the frame. It's almost like being a kid in a candy store and not being sure of where to look first!
I agree with Francois, though. I'd remove a little off the bottom and if you could bring out a little more detail out of the shadows in the spruce trees on the right that would be good too.
Mike.