My Pet Chicken says:
Possible Fun and Funky Genes: Crested, Frizzle, Sizzle, Naked Neck, Silked
Possible Breeds: Easter Egger, Cochin crosses, Silkie Crosses, Polish crosses, Silchens, Naked Neck, Serama, etc.
So basically, there's a good chance you won't ever know exactly what breeds it is...