A male red-crowned crane (L) guards his mate as she hatches eggs near their nest at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, May 7, 2024. Zhalong National Nature Reserve has made a detailed plan to ensure an ideal environment as the captive-bred red-crowned cranes there are in their breeding season. The reserve is dubbed the "home of red-crowned cranes" in China, and serves as the world's largest habitat and reproduction base for wild red-crowned cranes. To date, more than 380 red-crowned cranes bred in captivity have been released into the wild. (Photo by Wang Yonggang/Xinhua)