A red-crowned crane guards its chick and egg 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)