We placed golf balls in our hens laying box this last summer so they could get use to having hard white objects around. We never have taken them out. We place three in each of the two boxes. The hen only will lay in the left box, never the right. Now over the last couple days, they have been moving the three out of the right box and putting them in the left. Kind of weird and interesting. Should we just remove them, or let them keep "playing" with them?