Buzzard on Red-legged partridge

The estate I work on has no livestock and therefore the grass is not short enough to bait up on the ground so I put posts up in the fields and nail the partridge to the top. After this session in the hide I have now moved the post so that the background is darker, as in this shot the buzzard and backdrop are too similar in tone. Canon Eos 1d Mk1v. 800mm lens. 1/600th at f5,6. 400 iso.