Gorgeous shot! You must have a great deal of patience to capture something like this. Beautiful separation of subject and background, and that little light in the eye makes it come to life. And thank you for adding that bit about technique. I never would have thought about shooting a burst of shots. Really nice work.
The advantage of a burst is you can pick out the best shot. Even when the bird seems still the head is usually bobbing around.
The disadvantage of a burst is you get a bunch of images that are nearly the same and its often hard to tell which one is best.