11.The color appearance can attract the attention of birds 22.Decompression, prevention of parrots suffering from depression or screaming. At the same time, avoiding too long to eat properly. 33.Bell sound can meet the communication instinct of social animals 44.Give you more play space, and you can effectively exercise your physical fitness. 55.At the same time to meet parrots like to play, disassemble, chew, you can also develop brain intelligence
