@Gregor @Geoff Thank-you both for your detailed, constructive and helpful feedback. I now genuinely feel slightly guilty that we have highjacked @douglaswise thread and taken it too far from its purpose.
I really posted the image in a thread entitled high iso photography to share how impressed I am with the ability of a consumer DSLR to produce a reasonable image at ISO 12800. A few people have expressed interest in this in a trip report and whilst on safari a couple of other guests saw this image and decided to push their ISO settings higher than they had previously thought sensible.......... Then I saw the beautiful images posted by @Bush dog in his trip report taken at ISO 40000 and wondered why I had made a fuss at all!
The image I posted will benefit from further work as I had done only the minimum. It is quite heavily cropped starting as a shot at 330mm from a crop sensor, that together with the light source and my limitations as a photographer mean it will only ever be a record shot and not an exhibition piece.
Since I do feel we have strayed too far from the intent of this thread (for which I apologise) I will spend half an hour on this picture on a wet afternoon and post it, plus a jpg of the original image on the photo critique thread for further play.....