Crested ibis fly in the sky during a release activity in Tongchuan City, northwest China's Shaanxi Province, April 11, 2015. A total of 30 artificially-bred crested ibis were released to the wild here on Saturday. The crested ibis, also known as the Japanese crested ibis, is large with white plumage, and before the 1930s had thrived in Japan, China, Russia and the Korean peninsula. But its population was sharply reduced due to wars, natural disasters, hunting and other human activities. (Xinhua/Liu Xiao)
