I have a group of 12 pekins, 8 hens and 4 roosters. There are 4 trios: lemon cuckoo,lavender, buff and black. They were all bought at different times in summer this year. The lemon hens laid for about a month then went broody in July and havent laid since. The black laid a few very small eggs after they were bought in august and havent laid since. The buff were bought in late july at 10 weeks and never laid. The lavender were bought in june at 19 weeks and never laid. Last week, I added light which lasts 14 hours. How long will it take for them to start laying? They should all be ready to lay.