I have a broody BCM right now that I think has 11 eggs under her. She's in lock down now if I counted right. And I have 2 Hatchery RUNNER DUCKS that are broody on 7 duck eggs and 6 turkey eggs I placed under them. I've always heard that the runners are like the Leghorn of the duck world (Great layers and don't go broody) Well I guess when mother nature says hatch babies they don't care what breed they are