This same question was asked just a few days ago by another member. There is a search button in the blue tool bar above, and it might also be in the FAQ's. Any way, it depends on the bird. I have had some that start laying the day after leaving their chicks, and some that took a few weeks, and one that still has chicks and is laying. Most, I believe, will start after leaving their chicks, but it really depends on the bird. And a sfar as how long they stay with their chicks, that really depends on the hen as well.