Mr. Bai, a staff at the park said two groups of visitors were found harassing peacocks during the Lunar New Year holiday and that one bird had died.
Bai said the wildlife park prohibited such behavior, but that there were too many tourists that day to control.
The dead peacock was five years old, healthy, and had beautiful feathers.
The park has more than 6,800 peacocks of different colors, a huge attraction for tourists from all over the country.
Police are currently looking for the suspects.