In pics: Koshi Tappu Wildlife Reserve in Sunsari, Nepal

A man prepares to ride a boat to cross Sapta Koshi river at Koshi Tappu Wildlife Reserve in Sunsari, Nepal, Jan. 2, 2020. Koshi Tappu Wildlife Reserve is popular for bird watching and observing the conservation of last remaining population of wild water buffalo, locally known as Arna. (Photo by Sunil Sharma/Xinhua)