My question to the group comes about after a conversation I had with a gentlemen last evening. I know that hens lay eggs without having a rooster around - no problem, happens all the time. And I know that once you have a rooster, the hen will then lay "fertile" eggs. My friend was telling me that back in the 1930s a study was done with 100 hens that were completely isolated from any roosters. After a while, 17 of the 100 hens laid eggs that were not only FERTILE, but were all female chicks. It was explained as some sort of throwback survival thing. I find this hard to believe - if it were true, why would we need roosters at all (except for their beauty and lovely crowing)? If we could guarantee female-only chicks, that would certainly solve the headaches a lot of people have when they find that they got the 1 in 100 male. So - has anyone ever heard of this study? Has anyone every experienced this phenomenon? Or has he done a really great job pulling my leg? Thanks for any comments (except those that say I am completely gullible!).