Bird WatchingCorbett is famous for the richness and diversity of its wildlife which included over 50 species of mammals and over 580 species of birds. The national park is an important refuge for the tiger, Indian elephant, wild dog, leopard cat, Indian pangolin and hog deer. All of which were once common throughout the terai of Uttar Pradesh but are now rarely seen outside the park. The terai (moist land) is a belt of marshy jungle and grassland stretching between the foothills of the Himalayas and the Indian plains, a large part of the terai is in Nepal. Corbett's avifauna is particularly interesting because of the overlap between the plains and high altitudes. The Ramganga river is a source of attraction to many winter migrant birds.
A number of high altitude birds also visit the national park during winter. With altitudes at Corbett ranging from 400 meters to 1,200 meters above sea level, there is a rich variety of habitats. Nearly 73% of the park is covered by dense moist deciduous forest with a predominance of sal trees, accompanied by haldu, pipal, rohini and mango trees. While 10% of the core area is composed of grasslands in the valleys, which offer visitors a better view of Corbett's wildlife.