Mark, just wondering if this was a set up perch? If it was I would have tried to keep the perch in one focus plane so that the branch at the back wasn't oof. However, if it was a captured on what was available, not much you can do.
The image appears a little dull on my monitor but that could be fixed fairly easily, I'm sure. Like the highlight in the eye. Nice bird and I like the position in the frame.
Mark, you havent mentioned if this is set up in your yard. If so, I would remove some of the lesser twigs and the leaves. Good placement in the frame, and I agree a tad more contrast will boost this.