Wetland birds fly to Shengjin Lake of Dongzhi, East China's Anhui province, Jan 4, 2014. Among the many species at Shengjin Lake, five are classified as national first-grade protected birds, including the hooded crane, white crane and black crane. Shengjin Lake is recognized as a paradise for birds with its mild weather and clean water. [Photo/asianewsphoto]

Birds migrate to Shengjin Lake in Dongzhi county of East China's Anhui province, on Jan 4, 2014, which is an ideal habitat attracting more than 140 different species of wetland birds in the winter. Shengjin Lake is an important wetland and national nature reserve and is also known as "China Crane Lake". [Photo/asianewsphoto]

Birds live and play at Shengjin Lake nature reserve in Dongzhi county of East China's Anhui province on Jan 4, 2014. [Photo/asianewsphoto]