I like the pose, tail paralleling the perch, eye is well illuminated.
The background is showing a lot of noise or compression artifacts which detract from the picture.
The out of focus branches above the bird are also a bit distracting, and you might try to tone them down.
I like the pose, head angle and perch. Nice light. With that shutter speed, you had the ability to decrease the ISO and stop down. Both would have helped the background issues.
My favorite bird ... jazz man of the bird world, and you captured the attitude perfectly. They always seem to want to get
right up on the tip of something -- a tree, a branch, a telephone pole, a weather vane -- and sing their hearts out.
I think I would dim the background considerably on this one to put Mr. Jazzbo a bit more in the limelight.
I lie the pose and attitude of the MB. I think the main problem here is the light angle, both as the time of day this was captured and the way is coming from the upper right, creating shadows on the other side of the bird.
We share the same State Bird :)