HI, All: I'm new to the forum, and have pullets ranging from 6 mos. old to 4 1/2 mos. old. They have not started laying yet, which I was told was likely due to their coming of age in the wintertime, with fewer daylight hours. Can anyone tell me how many daylight hours in general are required for chickens to lay eggs, and if you live in northern CA, when it might be likely that they will start? Thanks much!