Mine will only set under cover. I know all their places, and I check under all cover. Mine apparently aren't as determined as all nest are made in the shed thankfully. I did have a sneaky one that was nesting inside a hollow stump. I had to watch her for a few days to find her. I generally count my hens weekly to make sure I'm not missing one. If I am I go looking until I find them.How do you take their eggs once they decide they want to set? I tried that, taking one away after Coco had gotten 4 or 5 in the nest ("she'll never notice," I thought). She immediately went into hiding under the barn and a month later--presto!--she had 16 babies!