Great timing and well done at 400mm, very hard to get near these bird here in my part of Australia. The splashing water looks great, but I think I can see where you added canvas to the right as there seems to be a hazy blueish vertical line running top to bottom and water texture looks different
Phill is right, I also notice the line. since you have to clone some water, I might clone the left bird, he is in focus, his running away the shot, and his wings are cut.