I like the pose you've captured with the raised foot. The bg is a bit distracting, but does show the habitat. I like the perch and the reflected colors in the water. A little more room on the top and bottom would have been nice. I think it would also benefit from a little more USM on just the bird.
Nice exposure. Yes I think the BG is a little distracting. It looks like he was a little distance from you. A shallower DOF would have given you more separation from the BG.