Research groups at Nara Women's University and Hokkaido University have been conducting deer surveys since 2015. In the five months to January 2017, the "bowing" behavior when receiving deer crackers was performed on average 1.5 times.
But in the one year until June 1 after the spread of the new coronavirus, It was 10.2 times, a decrease of nearly 2021%. In addition, the number of deer that appeared in Nara Park within a certain period of time was 6 on average before the spread, but after thespread of the disease, it decreased to 1.