Some of our chickens are refusing to lay their eggs in the coop. We found out yesterday that at least one chicken had made a nest in the bushes and we found 21 eggs in that location. We found two more eggs a little ways away from that nest. How do we get them to lay in the coop because we have forty acres of wooded torn up land and they have free run right now. We're going to fence them in to a specific area but until then we need to keep track of where they are laying to prevent snakes from coming in close to the house. Help please