White cranes forage at a paddy field in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

White cranes are seen in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

White cranes are seen in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

White cranes forage at a paddy field in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

White cranes are seen in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

White cranes forage at a paddy field in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

White cranes are seen in Yugan County, east China's Jiangxi Province, Dec. 10, 2021. Every year, migrant birds fly to Poyang Lake to overwinter.(Xinhua/Peng Zhaozhi)

来源：Xinhua