Photo taken on Jan. 5, 2023 shows installing a signal tracker on a swan at the Swan Lake National Urban Wetland Park in Sanmenxia, central China's Henan Province. Information is collected every year to track and measure the giant swans, and provide reliable research data for relevant researches. (Du Jie/Guangming Picture)
Photo taken on Jan. 5, 2023 shows staff putting a giant swan with a ring and a wireless signal tracker back into nature at the Swan Lake National Urban Wetland Park in Sanmenxia, central China's Henan Province. Information is collected every year to track and measure the giant swans, and provide reliable research data for relevant researches. (Du Jie/Guangming Picture)
点击右上角微信好友
朋友圈
请使用浏览器分享功能进行分享