When they first started laying, they seemed to experiment with all three boxes, as well as the nook under the nesting boxes. Now they've all decided on one box and all the days eggs are deposited there. I might have to try the wooden egg thing and see if that might encourage them to spread out because while it is convenient to find all of the eggs in one place, I have had a few cracked or broken eggs, probably because of the rush-hour pile up.