Two black birds in Zhengzhou, capital of Henan province, have attacked more than 50 men sporting T-shirts on the city's Funiu Road in the past 20 days.
Three of the victims have even bled as a result of the pecking.
Seemingly, 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.
