My blue cochin hen has been broody for quite a while. She sat on 7-8 eggs two weeks ago but crushed them all before they hatched. Now she is back on the nest with more eggs. I noticed tonight that there is another crushed egg pushed out beside her. How can I prevent this. Got any suggestions. I have put hay and wood chips in her nest but she flings them out. The eggs are on the bare floor of the nest box. I don't know what else to try. Shelf liner didnt work either Help.