How do you get a barred Duccle?

[jasonak]

Ive seen pictures of them,I was wondering are they just crossing them with barred rocks? Would you have to use a white D Uccle? Anyone know of any pages on how you would go about somthing like this? Or maybe someone on here has some

thanks

 

[Kanchii]

The same way any variety in any breed is created. By crossing or selecting for rare traits and then millions of generations to get them to breed true with correct color and type. If you just crossed a barred rock with a d'Uccle you'd just get a mutt, not a barred d'Uccle