I put four eggs under the reliable broody and she lasted a day. The minute she got off the nest to eat and poop my boss hen barred rock jumped up on the eggs and won't budge. There was a big racket but the BR won I guess since she's on the eggs. I don't care which hen sits as long as one of them stays! Good thing I only put four (of 6 extras) to try so its not a huge loss.