A heron is seen near the cliff by the Yellow River in Pinglu County, north China's Shanxi Province, March 12, 2019. As the weather turns warm, hundreds of herons build nests and reproduce here in spring time. [Photo by Liu Wenli/Xinhua]
A heron flies above the Yellow River in Pinglu County, north China's Shanxi Province on March 12, 2019. As the weather turns warm, hundreds of herons build nests and reproduce here in spring time. [Photo by Liu Wenli/Xinhua]
A heron is seen near a nest in Pinglu County, north China's Shanxi Province on March 12, 2019. As the weather turns warm, hundreds of herons build nests and reproduce here in spring time. [Photo by Liu Wenli/Xinhua]