I have 6 hens and they have all started laying eggs this week. Finally!! I built nesting boxes, about 3 weeks ago and put a marble egg in each to help them learn what the boxes are for, but they won't use them! Instead, they are laying eggs in the corners of the coop. The boxes are movable, so it isn't to big a deal, except that the corner they are choosing to lay in is under their roost. How can I get them to lay somewhere else?? Can I just move the boxes to their favorite spot for and then move it once they have learned to use the box?? HELP!