We had a hen, the last one due to a predator problem, sit on one egg. She set in mid april, on the one egg. She'd growl and peck right off, so we knew. We thought it was her way of getting away from our roo Blue. And HE was so lonely, he'd run to meet us when we got home from work! He'd hang out by the doors, he'd sit with us on the deck,,,,,,,just so lonely. In the meantime, we had gotten 8 other pulletts, introduced everyone slowly, and they were all living together at 6 weeks. Long story short, the one egg hatched. There's a pic on our page. It was a great feeling to see it happen. When "gracie" hatched out, everyone had to come see! Now, it's 6 eggs a day, and back to normal.