Eggs in the hedge again

Every so often, we stumble across a clutch of hen eggs hidden away on the allotment. This is our most recent find, in the hedge next to our haystack. Since discovering and removing the eggs last week, the hens have stopped laying there. We suspect that one hen at least is still laying somewhere away from the henhouses though our guesswork on this is complicated by the new hens we got on Friday, over half of which have already started laying.