- The Black Sex Link is an excellent brown egg layer. it is created from a Barred Rock hen and a Rhode Island Red cockerel. This creates a very versatile bird that is a great egg layer, has the temperament of a Barred Plymouth Rock and can hold its own through the cold dark winter. APPROX. 265 LARGE EGGS/YEAR | EGG COLOR: BROWN | MATURE WT: MALE 6 LBS. FEMALE 5 LBS.