I don't know much about them either but I'd have to say no to the vaulted head. I had hatched one that was different from the rest of mine but it died due to a stupid new broody. I think their head is somewhat squared, that's probably the wrong terminology. So maybe someone else can explain better. Cute chicks congrates. I have more eggs coming tomorrow. Setting Thursday on the full moon, with my D'Uccle eggs.