The red-crowned crane (Grus japonensis), also called the Japanese crane, is a large east Asian crane and among the rarest cranes in the world. In some parts of its range, it is known as a symbol of luck, longevity and fidelity. In Japan, this crane is known as the tanchozuru and is said to live for 1,000 years. A pair of red-crowned cranes were used in the design for the Series D 1000 yen note (reverse side). At Tsurui they are one of the 100 Soundscapes of Japan. Cranes are said to grant favours in return for acts of sacrifice, as in Tsuru no Ongaeshi ("crane's return of a favor"). See "Red-Crown Crane". Wikipedia. Retrieved 2014-10-26.