I think they are beautiful. However, if showing, I would be concerned with how much white is on this girl. Her tail should be all black with just the tips being white. They boys tail is better. The dad, in my opinion, is way too white all over. The boy's head has too much white. I am assuming these 2 are young, it looks as though the foot and leg feathing needs to grow in alot more. I like the young boy better than the girl but they both have very inconsistant color patterns. (too much in one area, not enough in another). The boys comb has 7 points, it should have 5.
I think they both stand nicely with their wings straight down and their backs seem to have the correct shape which is a 'U' shape. D'uccles should have the 'V'. They look nice and healthy.
Actually d'Uccles & Booted Bantams have exactly the same shape. The only difference is the beard.