I made a bird feeder using yakisugi (charred cedar) boards. A photo of it in use is included at the end. It can be easily attached and detached from your window glass with suction cups. Please slightly wet the surface where the suction cup will be attached before installing. To remove, insert a thin object like a utility knife between the suction cup and the glass to detach it easily. The food container is detachable for easy cleaning, and a hole is also provided on the window side, allowing you to observe the birds through the hole from inside the room. The diameter of the hole is approximately 11cm, and a plastic dish is set in it, but you can also replace it with something else to your liking. (For reference) The load capacity of each suction cup is 300g. ★When shipping, it will be disassembled and packaged as shown in the photos, so assembly will be required by the customer. Since it has been disassembled once, you can easily reassemble it by aligning the 3 screws with the pre-drilled holes and tightening them gradually by about 5mm in a cross pattern with a Phillips head screwdriver. ★If you wish to have it shipped assembled, the price will be 1500 yen, which is 550 yen higher due to increased shipping costs. ★The suction cups will be attached to all 4 locations and shipped. They are screwed in through the suction cup holes so that they can be replaced. The approximate dimensions of the main parts after assembly are as follows: Height: approx. 20cm Depth: approx. 23cm Width: approx. 14.5cm Hole diameter: approx. 11cm This is a work by an amateur who enjoys DIY, so it is not perfect, but I have made it as carefully as possible. I hope you will use it.