Material: Grass Size: 15*16cm about this project Natural MaterialOur birdhouse is made of natural mountain grass, which is dry and mildew-resistant. The bird's nest box is also environmentally friendly, durable, strong, breathable, and not easily deformed. Perfect Bird NestOur bird nest box has a strong hemp rope and fixed frame design on top. You can hang bird houses on tree branches, vines or fences to provide birds with a safe, warm and cozy nest. Unique DesignThe bird's nest made of natural mountain grass has better ventilation and heat dissipation performance, and can better dredge rainwater. Woven slits allow birds to rest securely and easily. ApplicableThese bird houses provide an ideal and safe open space for small birds such as hummingbirds, chickadees and other small songbirds. Kind tips 1. Since the bird's nest box is made of natural materials, it can effectively dissipate heat and evacuate rainwater in summer. When the air temperature is slightly lower, hay can be added inside to make the bird's nest provide a warmer and more comfortable environment for the birds. 2. Since the bird's nest is handmade with original ecological mountain grass, there is no guarantee that the finished product will be exactly the same as the picture, and there may be some errors The size is measured by hand and there may be some errors, please understand.