It never fails I fill the nesting box up with hay and when I go back later to check on them they have kicked it all out. It's only one of the nesting boxes that they do it to and I don't think I have ever had eggs in that box. Today I put the hay all back in and one of the hens jumped in and proceded to kick it all out while I was there. The boxes are all the same. I swear they are worse than little kids and their toys.