Made from ultra-durable HDPE (high density polyethylene) partially derived from recycled single-use plastics like milk jugs and shampoo bottles, the Arbor Birdhouse is a durable, maintenance-free solution for avian living. Its solid maple front panel will grey out over time but requires no maintenance. Made by Arbor Wood Co., this wood is thermally modified using only heat and steam. The result is a performance-driven material that keeps the wood's natural beauty without the use of harsh chemicals.