Approximately 300 seagulls from Siberia flock to the Haigeng Park on the north banks of Dianchi Lake in Kunming, capital of Southwest China's Yunnan province on October 9, 2017. Kunming has seen an increasing number of seagulls during recent winters, which could be attributed to the favorable climate and environment around the city's Dianchi Lake. Kunming is known as the "spring city" for its mild climate and year-round green environment.(Photo: China News Service/ Li Jinhong)