An aerial drone photo taken on Jan. 15, 2025 shows a wetland in Danzhou, south China's Hainan Province. A large number of black-faced spoonbills, an endangered waterbird under first-class national protection in China, have arrived at the wetland for wintering. In recent years, Hainan has been strengthening the protection of wetlands and birds to boost biodiversity. (Xinhua/Pu Xiaoxu)