- Natural materials help keep birds safe from predators as they blend in with surrounding areas and do not attract unwanted attention.- Birds desire a house made of rough material because rough surfaces make entering and exiting easier.- Reed grass and cedar roof are resistant to premature decay.- Roosting pockets are especially beneficial to non-migrating songbirds during the winter months. They provide much needed refuge from harsh storms, wind, freezing rain, heavy snow and the bitter cold.- Reed Grass Construction.- Natural ventilation and drainage, blends into surroundings.- Loved by a wide variety of songbirds!