Nepal’s varied elevations support more than 850 species of birds, or about 10 percent of the world’s total species. Migratory birds are seen in winters. The spiny babbler is unique to Nepal as it has yet to be spotted outside this country. More than 450 species of birds have been spotted in Chitwan National Park, while the Koshi Tappu Wetlands have been designated Asia’s finest bird watching site. The Mai Valley and Tamur Valley in east Nepal, Lumbini in central Nepal, and Dang Valley and Ghodagodhi Lake in the west are also good locations to sight exotic birds. As bird watching becomes immensely popular, specialized bird-watching tours are offered in the different national parks and wildlife reserves.