Their defensive behavior against an incoming threat such as hyenas and other predators, is to regurgitate and vomit onto the predators face. This vomit is strewn in a projectile motion and contains acids. The bird uses this tactic as deviation to distract the predator, after which it flies away. This regurgitated food if still undigested acts as food for the predators. In case the food has been digested, it acts as a deterrent, because it emits a foul smell and stings the predator's eyes, because of the acids present in the vomit.