Sizing your owl’s nest box To build an owl’s nest box, begin by choosing what size box you need. If the native owls to your area are small, you’ll need an eight- or 10-inch box, but larger ...

While barn owls can build nests in the hollow of a tree, the rafters of an accessible barn, or another opportune place, erecting an owl box can be a great way to attract them. Start with a 4-foot ...