Excellent shooting angle for a fine reflection. Your bird is sharp and well exposed. Great still water.
I like the idea of the lilly pads, only wish in a perfect world that the one in front didn't quite touch him, and the same for the one by his back, plus less color on that one (could tone it down)
I might even try a version with the one by the back cloned out.
Agree with Randy comments - sharpness right on. On my monitor, the grebe is quite dark. There is lots of space to the right on the histogram. Might want to use Levels and set the white point and maybe lighten the midtones as well. The lily pads make for an interesting composition that works well as a pano.
I like the pose, head angle and reflection, the calm water makes it special. I would lighten the bird some and if it were mine, I would consider removing the lily pad touching the bird's back. The composition works really well.