Thanks for all the comments. I had been photographing them feeding young in a nest and this was as I was leaving (due to the harsh light)...but when it landed next to me like that I had to have a go!
Have quickly (as I'm at work;)) adjusted the curves and sh-h to try to accomodate your suggestions. Thanks again.
Hi Dean, adjustments improve the shot a lot. A lot more dertail evident in both the chest and white area above the wings. I would try and reduce BG noise a little. My experience with these birds, never let a chance go by, well done.