In North China's Hebei province, thousands of wild geese come to Yiquanhu Lake in Cixian county, Handan, which has clear water and rich water plants. [Photo by Wang Zhiyong/chinadaily.com.cn]

In Shanxi province, eight wild flamingoes arrived at Yanhu Lake in Yuncheng city in recent days. They love staying there because the lake has abundant shrimps, clams, insects and alga, which are the best choices as flamingoes' food. [Photo by Shang Jianzhou and Liu Wenli/chinadaily.com.cn]

In Southwest China's Guizhou province, over 40,000 migratory birds have come to Caohai, a natural plateau freshwater lake in Weining, since this winter started earlier this month. [Photo by He Huan/chinadaily.com.cn]

In Southwest China's Guizhou province, over 40,000 migratory birds have come to Caohai, a natural plateau freshwater lake in Weining, since this winter started earlier this month. [Photo by He Huan/chinadaily.com.cn]

In Southwest China's Guizhou province, over 40,000 migratory birds have come to Caohai, a natural plateau freshwater lake in Weining, since this winter started earlier this month. [Photo by He Huan/chinadaily.com.cn]

In Southwest China's Guizhou province, over 40,000 migratory birds have come to Caohai, a natural plateau freshwater lake in Weining, since this winter started earlier this month. [Photo by He Huan/chinadaily.com.cn]

In Southwest China's Guizhou province, over 40,000 migratory birds have come to Caohai, a natural plateau freshwater lake in Weining, since this winter started earlier this month. [Photo by He Huan/chinadaily.com.cn]