I would imagine the bird's completely blown even if shot in RAW. That's life - those birds are such a pain and you really need to underexpose everything else to capture them. Good to review your image - keep tapping the "display" button until overexposed bits flash. Compositionally, I'm indifferent. The reflection of the tree is vaguely interesting, but as much as it can be a lead in line it can also draw the eye down and out. The point the tree meets the water is obfuscated by some foreground branches and some manner of black stump. The bird is a bit closer to the tree than desirable, leaving the right side of the image very empty. I do like the hues in the water, but there's not a lot to look at for long other than the tree and bird's "inverse silohouette". You might try cropping the bottom half out, tightening it up a bit. Cheers, Tony