This is the amusing moment a bird repeatedly attacked a motorcycle rider.

Zhong Wanjun burst into fits of laughter when he saw the seemingly enraged black avian divebombing the motorist ahead of him in Jiangxi, China.

Dashcam footage shows the feisty bird repeatedly swooping down at the man's head as he coasted along the outer lane of the road on July 1.

Experts said the behaviour is a defensive tactic used by birds to scare intruders away from their nests, especially when they are protecting eggs or young chicks. They often perceive humans as potential threats to their offspring.

However, most divebombing birds do not make physical contact, and their attacks mainly serve as warnings to keep a safe distance.