I have been trying to see how to best set up a nest box? I have been playing with designs courtesy of watching how the geese build nests around the yard. the one that is my prolific builder has a knack for digging a ditch in a circle and then getting a bunch of leaves to bury herself in. 1. screen on the bottom of the boxes. she dug to it and it left the bottom open to be dry and cold 2. plywood. wet sloppy and poo everywhere. 3. nothing.. but the slatted floor. seemed alright at first. as I found the bird would climb on the eggs and the edges of the slats were breaking the eggs I think? 4.large dog bowl/plant bowl/ its about 16" around. all the eggs would barely fit. she was knocking eggs out trying to turn them. 5. as of now I have a saucer sled (flexible flyer) in the box. it has a layer of potting soil in the bottom so I know its clean. and a few leaves to toss around to keep her busy. plus the shape lets the eggs move around without falling out the sled and they roll back to the group in the center for the most part. so we'll see. I have 14 left that haven't been crushed or lost. if anyone has any suggestions I am open to anything that might get one of these girls to settle down and sit.