Stuart you were stuck between a rock and a hard place. I confess I would have taken a similar image myself but it doesn't quite work for me. The reason being that there are two acceptably sharp wings and two not so. The result is I go to the body which is good then to the wings which is good and not so good.. I don't suggest i would have done better not for one minute, it is luck of the draw, the pose is idyllic or it isn't.
Exposure colours sharpness etc - very good indeed.