The image does illustrate what is happening. This species is known to drop bones to shatter them so that the marrow is mor attainable. Image quality looks very good, and I like how you were able to keep the carcass remnants in the frame. You may want to lighten the shadows to pull more details out for the viewer. A very interesting bird and am glad that you were able to get this nice photo while on your trip…Jim
You caught a very interesting moment, Antonello, and the image quality looks quite good. Getting the bone still in the frame is a real bonus and does tell the story, particularly combined with the open talons which helps imply that it was deliberate. I agree with @Jim_Zablotny that it might be a good idea to play with opening up the shadows a bit. The dark underside of birds can be tricky to do without it looking overdone, but I think it would give the image a bit more punch in this case.
Thanks @Jim_Zablotny and @Dennis_Plank for your comments, also on the deliberate action of the vulture. I opened up the shadows a bit in the revised version, more than this could seem a bit artificial…