A bevy of red-crowned cranes fly over the wetland of the Zhalong Nature Reserve in northeast China's Heilongjiang Province, on July 25, 2009. Located near Qiqihar City in northeast China's Heilongjiang Province, the Zhalong Nature Reserve is a perfect habitat for red-crowned cranes, and also a perfect observation site for bird fans at home and abroad. (Xinhua/Zhang Xiaolong)
