Best I can recall was of 27 hatched, 23 survived through 5 weeks. A current brood that started as 24 is down to 20. I am one that likes to keep broody hens with broods separate from balance of flock and each other for a few days at least. About 12 is as high as I shoot for and 8 to 10 optimal. Most of my hens are either American Games or Missouri Dominiques (composite of American Game x American Dominique).