Tens of thousands of swallows were photographed perching on the power wires at a community in the city of Kunming, southwest China’s Yunnan Province on Friday night. /China News Photo

Every night at around 7 p.m. the birds gather in the community. Some swoop and circle, while others rest on the power lines. /China News Photo

According to residents, this has been happening for the past five years, except in winter. The swallows visit the neighborhood to spend the night, and spread their wings and fly the next morning to search for food. /China News Photo