The kilak or gilak is a great monster-bird of Pomo myth, listed among the personages of Samuel Barrett's Pomo Myths (Barrett 1933). Its terror was dramatized among the Central Pomo in the kilak-ke or monster-bird dance recorded in the early ethnographies (Curtis 1924; Barrett 1917). Reviewing the Achumawi cosmogony An-nik-a-del, Jaime de Angulo compared its dragon Kwillah to 'the famous Kilak of the Pomo,' an index of how widely the being was known in north-central California (de Angulo 1930); the neighboring Wappo also borrowed the figure. Although some narratives speak of more than one such being, the dance and the principal tales treat the monster-bird as a single formidable figure.