Made of natural wood which is safe and free from poison, the pet can be relieved to gnaw and play. It is made up of bright colored blocks. It is easy to attract the attention of the birds. The chain of high quality is easy to install in the cage for pets to play and can train birds feet and beaks. It can slow down the boredom of birds' and increase stimulation. Birds can chew it to clean teeth and keep its beak healthy.