I seldom walk the west side of Cesar Chavez Park, as it's usually too windy to be fruitful birding.
This particular morning last week was very calm, so I did go on the west side, and was rewarded by a flock of sparrows sunning themselves on the tops of bushes next to the path.
I think you could also go with a horizontal crop if you brought in the top of the frame but I like what you've done here with the vertical. Exposure looks really good...nice HA and eye contact! I think the sharpening is pretty close but wonder if you couldn't push it just a bit more around the eye/beak/face area.