My chickens free range. I have 8 hens, 2 roos and a guinea fowl. I let them out around 10am - and back in the coop they go at around 6-7pm. They were doing great at laying in the morning - and I'd collect the eggs as they'd head out for the day. The past few days - no eggs. I've been watching thier regular route - and haven't been able to find any eggs. It's a bit like a daily easter egg hunt, and getting old. How can I encourage them to lay in a certain area while they are out and about? They seem to roam on about 3 acres of hilly land.