Why Visit Koshi Barrage & Sunsari Wetlands
The Koshi Barrage and surrounding wetlands in eastern Terai form one of the most productive birdwatching areas in the Indian subcontinent. The wetland system supports dolphins (Gangetic platanista), mugger crocodiles, golden mahseer fish, and staggering concentrations of waterfowl during the winter migration.
Best Time to Visit
The best time to visit is November–February.
Difficulty & What to Expect
This is an Easy destination to visit. The Gangetic river dolphin (platanista), one of the world's most endangered cetaceans, can be observed from the barrage. Very few international tourists visit — the area is primarily visited by specialist ornithologists.
Who It's Best For
Koshi Barrage & Sunsari Wetlands suits specialist birders, freshwater biologists, and eastern Nepal visitors.