I have d'uccles and i agree he looks like my boys. I'd say he's probably a darker golden-neck (higher probability) or a messy mille fleur. He's pretty though!
He was filler from the hatchery to the feed store where I bought my bantams this year. Guess I got really lucky picking him out. Now I'm looking for a hen for him.
Thanks everyone for filling me in on this little guy.