A man holds a piece of bread in his mouth on Nov. 30 to feed a red-billed gull at the Caohai Levee of Dianchi Lake in Kunming, Southwest China’s Yunnan province. Many of the birds have arrived in the city for the winter. Photo: VCG

A visitor feeds red-billed gulls at the Haigeng Dam in Kunming in October 2021. The birds usually migrate to Kunming from mid-to-late October and leave the city around the end of March the following year. Photo: VCG

A couple poses for wedding photos while holding up food for the gulls at the Dianchi Lake scenic area in Kunming on Nov. 3. Photo: VCG

A resident tosses bird feed in the air in Cuihu Park in Kunming in February 2020. Photo: VCG

Gulls fly above a crowded area near the Dianchi Lake scenic spot on Jan. 5. The area features a statue of Chinese musician Nie Er. Photo: Liu Ranyang, China News Service/VCG

A boat motors through Dianchi Lake on Nov. 30. Photo: VCG

Red-billed gulls soar over the waters near the Haigeng Dam in February 2020. Photo: VCG

Red-billed gulls gather on the ground near the Haigeng Dam. Photo: VCG