Very well done Jason. The light on the Towhee is excellent, the bird is sharp and full of detail, some will say the BG is cluttered but I like it as is, these birds live in the thick stuff and this image shows their environment well.
Terrific exposure, details and sharpness on your bird. Wish for a cleaner BG but you have showcased the bird well considering what you were dealing with.
The bird is nice and sharp and the pose is great, but the BG is taking away from the bird. I think the vignette is a bit much, but I would not loose it completely.