Dave, really great moment with the wings up and quite sharp handheld at 1260mm! The image does seem a little static with the bird centered and not enough room to move into. A little more room to the left would allow the bird to fly into the space in front of it.
I assume you selected the bird and processed the sky separately. I see a few places in the tail, above the tail, and above the head where the sky colors vary at the edges of the feathers.
Very impressive capture though at that focal length.