This perch is designed with the natural shape of a tree, and the branches are somewhat thick, making it easy for medium to large birds to perch. The base and the perches on both sides are made of Japanese arborvitae, a very hard material. The branch in the middle is driftwood collected from the beach, but the type is unknown. While the driftwood alone should be sufficient as a perch, I've placed Japanese arborvitae on both sides because of the space available. One of the Japanese arborvitae perches has some finer branches left on it to make it easier for small birds to perch, but please cut them off with pliers or scissors if they are not needed. 【Size】 Approximately 100cm in maximum height and 120cm in maximum width. All three branches are inserted and fixed into the holes in the base, but if you are concerned about slight wobbling or tilting, you can easily fix them with wood glue. Thank you for looking.