Chickens play unaware that they are being closely monitored. [Photo/IC]

Special training at the bureau lists possible abnormal behavior as chickens flying atop trees instead of eating, a large number of fish leaping out of water or many toads moving home, said Zhou Hongbing, a breeder turned earthquake observer at Banqiao Ecological Park, one of the refurbished animal farms.

To make sure the behavior of animals is closely tracked, cameras are set up across the park which is home to 200 black boars, 2,000 chickens, and a fish pond of 6.6 hectares.