![Thousands of migrant birds gather at wetland for rest in Tianjin(1/6)](http://www.ecns.cn/hd/2017/11/16/192d97943e644ad888227c469d081db5.jpg)
Migrant birds fly over the Beidagang Wetland in Tianjin, north China, Nov. 15, 2017. Thousands of migrant birds gathered at the wetland for rest. (Xinhua/Yue Yuewei)
Migrant birds fly over the Beidagang Wetland in Tianjin, north China, Nov. 15, 2017. Thousands of migrant birds gathered at the wetland for rest. (Xinhua/Yue Yuewei)