I have some replacement hens, and I'm wondering at what age they will start laying. I know that I could go online and look up the breeds, and find out , and it would probably be pretty accurate, but you all are so helpful, I want to know when YOUR hens of the same breed started laying !!! I have 4 white leghorns , 2 black astralopes , and 2 silver laced wyandottes , all of them are 15 weeks. So what do you think , when should I expect eggs ?