I have somewhat of a newbie situation and question. I have some of my hens that are laying but none are laying in their nest boxes but rather they lay when they are out free ranging and have consistently layed in our duck house or in the corner on the floor (buried) in the chicken coop. I have to dig through 4-6 inches of pine shavings to find eggs. How do I get them to lay in the nest box? If I lock them in the coop won't the rest of the chickens (various younger ages but not laying yet) get mad about not free ranging?