Dongying, where the Yellow River flows into the Bohai Sea, has made great efforts in wetland ecological protection. The city has been named a World Wetland City by the International Wetland Federation because of its progress in wetland protection.

The Yellow River Delta National Nature Reserve in Dongying is located in the delta where the Yellow River, China's mother river, joins the Bohai Sea. [Photo/WeChat account: shgb969]

The Yellow River Delta National Nature Reserve now boasts 1,630 animal species and 685 species of plants. [Photo/WeChat account: shgb969]

The Yellow River Delta National Nature Reserve welcomes flocks of migratory birds every winter. [Photo/WeChat account: shgb969]

The Yellow River Delta National Nature Reserve in Dongying is often dubbed a paradise for diversified groups of birds. [Photo by Yang Bin/CNR]

The number of bird species observed in the Yellow River Delta National Nature Reserve has doubled to reach 371 from 187 in 1992. The reserve is also the largest breeding ground in China for oriental storks. [Photo/WeChat account: shgb969]

The sound ecological environment in the Yellow River Delta National Nature Reserve attracts nesting by more and more birds. [Photo/WeChat account: shgb969]