In Breton folklore, a spectral creature which emerges from the sea at night to hoot like an owl. People are warned not to heed the yannig's call, even when it asks for pity. It is believed that at the third call it will appear behind a person's back, consuming him and turning him into a whiff of air.
- MacKillop, James. (2004). Dictionary of Celtic Mythology. New York: Oxford University Press, Inc.