Hi everyone. I bought 4 pullets Memorial Day weekend - two White Leghorns and two Golden Sexlinks. They just turned 23 weeks this past weekend. Of the 4, 1 White Leghorn started laying 3 weeks ago at 20 weeks. We had an extremely hot and humid summer and my older hens stopped laying for a while. Once they started back up, the one Leghorn began laying a few days later and I thought surely the other girls would be right behind her but still nothing. Should I be worried or just let them be? They are all on grower feed, but have a very large area to free range in during the day.