The choice of materials for the birdhouse directly affects the health of the birds. The birdhouse of Chuangze Vision is made of natural fir wood, which contains antibacterial components. The roughness of the surface design is conducive to birds' grasping. 2. Maximum safety protection value: The entrance diameter follows the "golden ratio" rule: The entrance of the bird house is 3 to 5 centimeters. This size can not only prevent natural enemies from invading but also ensure air circulation. The eaves should be kept at an Angle of 20 to 30 degrees, which can not only guide the flow of rainwater but also form a natural shading structure. 4. Cleaning only takes one step: As soon as the front door opens, it's clean in the blink of an eye! No need to worry about cleaning the bird's nest anymore. The unique door opening design keeps dust out. Just clean the exterior. A blessing for the lazy! 5.