We are setting up our first coop today. Our plan is to use sand and DE for the bottom of the coop but what should we use in the nesting boxes? I have pine shavings from the brooder but wasn't sure if I should use that or maybe hay??? Also, do I need block off the nesting boxes at first? I read that somewhere but wasn't sure why. Also, how long should we wait before allowing them to free range outside of the run while we are outside? I have so many questions!