Nature's Way EcoCycle™ Bluebird Bungalow Recycled Plastic Bird HouseRECYCLED MATERIALS: Made from recycled materials, this EcoCycle Bluebird Bungalow birdhouse is a sustainable birding choice DESIGNED FOR BLUEBIRDS: Precisely designed 1 1 2" opening for bluebirds VENTILATION: Air vents allow for maximum air ventilation through wall and floor openings for bird health EASY CLEAN: Clean out door allows for easy access and thorough cleaning PREDATOR GUARD: Extends the entrance hole to protect young birds against predators