A migratory bird flies over Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Feng Kaihua)

The Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region has all the makings of a state-class wetland natural reserve for waterfowls.

Migratory birds gather here every year for rest and reproduction from March to October.

Aerial photo taken on April 25, 2020 shows migratory birds at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region. (Xinhua/Feng Kaihua)

Aerial photo taken on April 25, 2020 shows the scenery of Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region. (Xinhua/Feng Kaihua)

A migratory bird is seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Jia Haocheng)

A migratory bird is seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 24, 2020. (Xinhua/Jia Haocheng)

Migratory birds fly over Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Jia Haocheng)

Aerial photo taken on April 25, 2020 shows the scenery of Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region. (Xinhua/Wang Peng)

A pochard is seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 24, 2020. (Xinhua/Jia Haocheng)

Young herons are seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 24, 2020. (Xinhua/Feng Kaihua)

A heron is seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Wang Peng)

Migratory birds are seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, April 25, 2020. (Xinhua/Wang Peng)

Photo taken on April 24, 2020 shows the scenery of Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region. (Xinhua/Wang Peng)

A heron is seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 24, 2020. (Xinhua/Jia Haocheng)

Aerial photo taken on April 25, 2020 shows migratory birds at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region. (Xinhua/Feng Kaihua)

Avocets search for food at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Wang Peng)

A migratory bird is seen at Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Wang Peng)

A migratory bird flies over Shahu scenic area in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, on April 25, 2020. (Xinhua/Wang Peng)