I have 2 MF d'Uccle hens that are about 11 months old. They're friendly... when I can catch the fast little boogers. As far as laying, they're not nearly as dependable as my Black Australorp, who lays almost daily, but their eggs are not that much smaller than hers compared to the difference in their body sizes.
We love our feather-footed, muffed-faced, spotted little girls.
BTW, mine try to hide their eggs and one of mine went broody this past November, at around 7 months old.
I have one rooster that thinks he wants to live inside and is always sitting on my shoulder chattering up a storm. He was my main one to always jump the fence and come to the door begging. He has also been on a car ride and liked it.
The other two roosters are more stand-offish and chicken-like in their behavior. Small in size, big in attitude.
The hens are very friendly and until everyone went broody here I was getting 9- 10 eggs per day out of 12 pullets (not all d'uccles). I would say about 5/6 eggs per week.
I posted this picture elsewhere but these girls just crack me up - two of them are broody and sharing a nest, the other two just wanted to be with them: