Java Wood Perches are made from Coffee Trees that are nonproductive. These trees are cut down to plant productive trees. The wood from the nonproductive trees make long-lasting, durable perches for your bird’s cage. The all-natural shapes mean there are no 2 alike. The curviness of the perch will help to exercise your pet’s feet and guard against problems with your baby’s feet. The size of the cage determins how many perches will be needed. For a small bird cage 2 to 3 perches are needed.