You really captured the graceful qualities of the egret! I would be tempted to do a little dodging and burning or increasing contrast, or both, to emphasize the beautiful play of light on the bird.
Great shot, but are you sure that is a SNOWY egret? I believe that the snowy egret has yellow feet and a black bill, whereas the great egret is the opposite.
As the image is in B/W, we can never know for sure no matter how many references you provide as the two birds look quite similar EXCEPT for the color differences.Do you have any images of THIS bird in COLOR?