The Natures Way Cedar Bluebird with Viewing Window Bird House (CWH4) is a rot and insect resistant bird house that is made from cedar. It has clean out doors that provides easy access for clear bird viewing and cleaning. It has stay clear and crack resistant viewing window which allows you to view your feathered friends while still having that protection for the young ones. It has rust free hardware and stainless steel screws. The water based protective stain keeps it looking like new and protects it from harsh weather. It also has a predator guard on the entrance hole to protect birds against predators.