My hens want to nest on the ground no matter what I do. The biggest surprise was when they both nested right in the middle of the construction sight I had going on the back patio area. We are talking cement mixers, bull boxers, chainsaws , multiple landscapers, lots of people, noise, dirt, dust, heat etc... I actually had to go dust the stone dust off one of the hens at night so she wouldn't suffocate. Every egg hatched in both nests! Turns out, they like the commotion as it keeps predators away! And one of the nests was just on gravel and a few leaves. This year my hen nested in the hen house under the perches so the chickens were leaving droppings on her back! After the eggs hatched she moved them outside to a corner of the pen were I had to put a small tarp over the top to keep the rain off the them. It's been really cold and rainy here- and yet she won't move them back inside. It's been 4 days and their still all fine. It just goes to show they are going to nest where they want to, no matter .