Greetings, The chickens will be 20 weeks old Jan 1st (Barred Rock and Silver Laced Wyandottes). I've just made the final adjustment to the timer so the lights come on at 2 AM. If I remember correctly, the hens need two weeks of 15-hour light to trigger the laying. Until now, I've kept the laying boxes, and their attached landing board, covered so that no one could roost on the board or sleep in the boxes. Should I wait for the first egg before uncovering the boxes? Thanks in advance for the suggestions.