I got my 2 Rhode Island reds on May 6. I just counted the weeks on the calendar. I thought they were 20 weeks, but actually they are 22 weeks. No sign of an egg in the nest box. There is a golf ball in the nest box and I have been checking for a few weeks now. They have oyster shell available. If they were laying eggs in the yard while free ranging would they pay any attention to the location so I can find it? Should I leave them in the coop 24/7 for a few days and see what happens?