This week, along with production dropping off the face of the earth, a couple birds that have been using the nest boxes for the last four months decided to start laying on the floor of the coop, under the roost bars. They are raised nest boxes, about 20" off the ground, the roost bars are 40". They are also rollout nest boxes. The frustrating part to me is that they used the boxes all summer, now all the sudden they are refusing. Four of them yesterday, thanks to monkey see money do. Thoughts?