This is a birdhouse made from cedar boards. It's sized to be suitable for small wild birds like the Japanese tit and varied tit to build their nests. The entrance is 28mm, the height is about 25cm, and the base is about 15cm x 15cm. It has a feeding platform, drainage holes in the bottom, and the back is designed for easy attachment to garden trees. The front panel has a door for easy cleaning after the fledglings have left the nest. The burnt wood finish highlights the beautiful wood grain. Please attach it to a garden tree and enjoy it, especially as spring approaches.