One of the most powerful new tools in Lightroom 5 is the Radial Filter tool.
Let's face it, Lightroom's post-crop vignette leaves a lot to be desired, especially if you want your vignetting effect to be applied a bit off-center, allowing you to draw focus towards your subject.
The desired effect is exactly what this tool gives you. In the case of the hummingbird, the little bit of vignetting that you can create achieves a mystical, old time photo.