Photo taken on Thursday shows flocks of migrant birds arriving at a wetland to rest and forage in Haikou, South China's Hainan Province. (Photos: People.cn) Migratory birds have recently arrived in wetlands in Haikou, South China's Hainan Province, to spend the winter. As one of the first Chinese cities named an "international wetland city" in 2018, Haikou is home to 29,093 hectares of wetlands, providing a sound habitat for more than 100 species of birds in winter.

Photo taken on Thursday shows flocks of migrant birds arriving at a wetland to rest and forage in Haikou, South China's Hainan Province. Migratory birds have recently arrived in wetlands in Haikou, South China's Hainan Province, to spend the winter. As one of the first Chinese cities named an "international wetland city" in 2018, Haikou is home to 29,093 hectares of wetlands, providing a sound habitat for more than 100 species of birds in winter.

Photo taken on Thursday shows flocks of migrant birds arriving at a wetland to rest and forage in Haikou, South China's Hainan Province. Migratory birds have recently arrived in wetlands in Haikou, South China's Hainan Province, to spend the winter. As one of the first Chinese cities named an "international wetland city" in 2018, Haikou is home to 29,093 hectares of wetlands, providing a sound habitat for more than 100 species of birds in winter.

Photo taken on Thursday shows flocks of migrant birds arriving at a wetland to rest and forage in Haikou, South China's Hainan Province. Migratory birds have recently arrived in wetlands in Haikou, South China's Hainan Province, to spend the winter. As one of the first Chinese cities named an "international wetland city" in 2018, Haikou is home to 29,093 hectares of wetlands, providing a sound habitat for more than 100 species of birds in winter.