Camera Work/Technical: As I mentioned in my comment during the challenge, the focus seems to be off just a little. It looks like the grass is more in focus that the dead bird. Closing that aperture and using just a little fill flash would have helped this even where the camera focused.
Lighting: The lighting is pretty nice. The white down feathers at the bird's butt lost a little detail. That adds a small distraction, but the remainder of the image seems nicely lit.
Composition/Content: I like the basic composition, but it has a slight crowded feeling to it. The feather touching the bottom left corner is the sole reason for this. Opening up the crop just a slight amount would easily remedy this.
My Opinion: As is, the image score pretty close to its potential. With better focus and just a slight adjustment in the cropping, this would be well above a 5.
Nice conveyance of failure, but the focus seems to be off just a little. It looks like the grass is more in focus that the dead bird. Nice capture and pretty good composition. I would like to see the rest of that toe at the bottom of the frame.