Oriental white storks are pictured at Caofeidian wetland in Tangshan, north China's Hebei Province, Nov. 5, 2019. The oriental white stork is listed as endangered by the International Union for Conservation of Nature. The wild population is estimated at less than 3,000. (Xinhua/Yang Shiyao)

Oriental white storks fly over Caofeidian wetland in Tangshan, north China's Hebei Province, Nov. 5, 2019. The oriental white stork is listed as endangered by the International Union for Conservation of Nature. The wild population is estimated at less than 3,000. (Xinhua/Yang Shiyao)