Sei Shōnagon
It has been celebrated by numerous "waka" poets since the anthology "Kokin wakashū" (920). Sei Shōnagon in her essay "The Pillow Book" (1002) mentions a trip she and other courtiers mounted on just to hear this bird, and it was expected of them that they would compose poetry on the occasion. It is also the central image in poem 81 by Tokudaiji Sanesada in the anthology of 100 poems, the "Hyakunin Isshu ".