- Barnevelders are a medium heavy, dual-purpose birds that are very cold hardy. Their beautiful double-laced brown and blue feathers are just another perk of this docile bird that takes to foraging easily. The Barnevelders are single combed with yellow legs. APPROX. 180 LARGE EGGS/YEAR | EGG COLOR: BROWN | MATURE WT: MALE 6.5 LBS. FEMALE 5 LBS.