Our chickens are about maybe 16-17 weeks old - we figured maybe they were about ready to start laying - but wasn't sure. They are free range. I have a nest box in the coop - but the only time they are in there is at night when they go in to roost. Anyway - we have a couple baskets on the porch and we just happened to look in one by accident and found a brown egg. I assumed it was from that day. What can we expect from here? are they going to lay anywhere now? Should I build an attached run and confine them now to their coop? Any info would be appreciated. thanks.