Karasu Tengu - the Crow Tengu: The ancient form of the Tengu

Karasu Tengu (“Crow” Tengu) 烏天狗

"The ancient form of the Tengu was the “karasu” or “crow” Tengu. Portrayed as an evil crow-like creature with the body of a man, it was capable of kidnapping adults and children, starting fires, and ripping apart those who willfully damaged the forest, for the Tengu live in trees. Sometimes, too, the Tengu would abduct human beings, only to release them later, but the “lucky” survivor would return home in a state of dementia (called “Tengu Kakushi, meaning “hidden by a Tengu”)." - http://www.onmarkproductions.com/html/tengu.shtml