1 / 3   Pigeons taking flight at Boudhanath Stupa during the birth anniversary of Buddha, also known as Vesak Day, in Kathmandu, Nepal on Sunday. /VCG Photo

2 / 3   The event commemorates the birth, enlightenment, and death of Gautama Buddha in the Theravada or southern tradition. /VCG Photo

3 / 3   Buddha Purnima falls on different days in different countries. /VCG Photo