Amazing breeding colors, nice pose, angle in frame, exposure. Just enough of a catchlight to make the eye lively.
A little tight as far as crop, but when shooting in a cluttered environment, I do often crop a little tighter to cut out some of the unavoidable clutter.
I am seeing some color blotches in the upper BG, probably from compression effects.
I think you are probably right about the saturation, it is a little overdone, too much "pop".
Doug the whites are difficult to comment on as this bird is in breeding plumage, hence the pink glow and the thicker feathers on the neck, but I believe they should be a little "cleaner"