The light angle wasn't your friend here, causing shadows on the bird and perch.
The background is a bit busy for my taste. Possibly a larger f/stop to reduce DOF, since you had plenty of shutter speed to work with.
I think you might be able to crop away some of the background to simplify the image.
I agree with all Randy has said, I would recomend under this type of light, to use flash to fill the shadows.
Congratulaitons as the natural moment and sharpness are great.