The expression on his face is priceless. Makes up a little bit for the lack of contrast in the image - this could use stronger blacks and whiter whites to really grab me. Composition, crop and POV are pretty good. Duck a little soft but I can tell he's moving so it makes sharpness a little more difficult. 6 from me. Good luck in the challenge!
The desaturation here seems to be the 'because I can' variety. There are some interesting textures here, which a sharper focus would have helped to accentuate.
I like the picture. I think the posture of the bird is perfect. The tones in the B&W though kind of make the duck blend into the background. Would like to see the duck stand out more.
Good detail on the duck. I think I would enjoy seeing this in color as well, though the b&w does have a certain amount of charm. Good composition, I like the spillway.