Three Chinese crested terns play on the wetland of the Minjiang River in southeast China's Fujian Province, June 3, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
A Chinese crested tern forages on the wetland of the Minjiang River in southeast China's Fujian Province, July 4, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
A Chinese crested tern forages on the wetland of the Minjiang River in southeast China's Fujian Province, July 4, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
Two Chinese crested terns fly over the wetland of the Minjiang River in southeast China's Fujian Province, June 3, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
Two Chinese crested terns play on the wetland of the Minjiang River in southeast China's Fujian Province, June 2, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
Two Chinese crested terns play on the wetland of the Minjiang River in southeast China's Fujian Province, June 3, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
A Chinese crested tern forages on the wetland of the Minjiang River in southeast China's Fujian Province, June 3, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)
Two Chinese crested terns play on the wetland of the Minjiang River in southeast China's Fujian Province, June 3, 2018. The Chinese crested tern is a critically endangered species. (Xinhua/Mei Yongcun)