This is a study of visual and textual images of the mythical creature tengu from the late Heian (897-1185) to the late Kamakura (1185-1333) periods. Popularly depicted as half-bird, half-human creatures with beaks or long noses, wings, and human bodies, tengu today are commonly seen as guardian spirits associated with the mountain ascetics known as yamabushi. In the medieval period, however, the character of tengu most often had a darker, more...