In the first, the cluttered background detracts from the shot of the bird. It is just too much in focus and occupies so much of the image that it obscures the subject. The second shows a much better background but perhaps goes a bit far the other way becoming patterns of light rather than an inclusion of the environment.
The first could be improved by cropping and the second a bit of selective brightening around the head.
The Grackle is usually willing to let you get a little closer. Shooting birds requires some slow movement and not too much attention on the bird until you are ready to shoot. Like a pretty girl on the street. They like to be noticed but get nervous if you stand and stare too long