I have had 5 orpington chicks for 3 months, although they're no longer chicks. One rooster and the rest hens. They are doing great and are now free ranging and return to protected coop at night. How do i make the transition to nesting boxes? or will they do that on their own? The boxes ( hay filled and cozy) are provided but no one is having any part of them. This is my first attempt at chickens and are enjoying them immensely!