Do you use something else in the nest box? or do you also use sand? I put pine shavings in the nest box and sand everywhere else and all 5 girls slept in the nest box last night. They are so used to the pine shavings so I think they felt safe there. I took the pine out today and replaced it with sand, because I don't want them to make a habit out of sleeping in there. So I was just wondering... when they get to the laying phase, do you also use sand there? Should I block off my nest box until then?