Birds never forget their T-shirt wearing killers!

New Delhi, July 17 (ANI): In a bizarre incident, two black birds in Zhengzhou, capital of Henan province, have been reported to be attacking men, who wore T-shirts.

Around 50 men have been attacked as they walked along the city's Funiu Road in the past 20 days, and three of the victims are said to have bled as a result of the pecking, reports the China Daily.

What is puzzling is that the two birds never attack women, children and senior citizens, and incidentally, all their victims are young men walking around in T-shirts.

Zoologists believe the two birds are avenging their baby's death 20 days ago.

The baby bird was killed after it fell to the ground from their nest.

A man, wearing a T-shirt, picked up the dead bird and chucked it into a roadside dustbin. (ANI)