I would say masculine pullet. Males indeed will have black breast feathers. Females have Laced. It's a Sexual dimorphic color pattern.
Double Laced pattern is Partridge with the Pattern gene. But in the case of Barnevelders, they also have the Ml(Melanizer).
Double Laced pattern is Partridge with the Pattern gene. But in the case of Barnevelders, they also have the Ml(Melanizer).