Simply an amazing capture. I love it and one reason is b/c it's SO different from what we normally see. I love the fact that the eye is tack sharp and easily seen. If you have it, I would love to see a tad more space on the left. Well seen and captured.
I will second Mariana's thoughts, this is a wonderful capture. Love how the bird emerges from the dust, enough detail to capture our eye, enough dust to add a sense of action, mystery to it.
Showing the carcass or the other bird would improve the story telling, but it flies beautifully as is!
The dust, the eye and the tension in the pose all work together to make this very effective. Have you thought about takind a bit off the top to lend some pano to it? The left side is fine for me.