A red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Ding He)

Red-crowned cranes fly at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Chen Yichen)

A red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Chen Yichen)

Red-crowned cranes fly at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Chen Yichen)

A red-crowned crane flies at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Chen Yichen)

Red-crowned cranes are seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Ding He)

A red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Ding He)

Red-crowned cranes are seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Ding He)

A red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, March 29, 2024. Zhalong National Nature Reserve provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Chen Yichen)