I made a birdhouse using burnt cedar boards. The size is designed for the Japanese tit (Parus minor). The main dimensions are as follows: Height: Approximately 30cm Width: Approximately 14.5cm Depth (roof): Approximately 21.5cm Roof length: Approximately 21cm Depth (box): Approximately 16.5cm Stick length: Approximately 5cm Hole diameter: Approximately 3cm This is the work of an amateur DIY enthusiast, so it's not perfect, but I made it as carefully as possible. I hope you will find it useful.