The Nanda Devi National Park spreads over an area of around 630 sq km and is surrounded by the Nanda Devi mountain on three sides. In 1988, the park was declared as a UNESCO World Heritage Site, along with the Valley of Flowers. The whole region of the Nanda Devi National Park falls under the Western Himalayas Endemic Bird Area (EBA).The park provides shelter to snow leopard, Himalayan black-bear, serow, Himalayan musk deer and Himalayan tahr. Brown-bear, ruby throat, bharal, langur and grosbeaks can also be seen in the park.There are around 100 species of birds, including orange-flanked bush robin, Indian tree pipit, yellow-bellied fantail flycatcher, blue-fronted redstart and vinaceous-breasted pipit. Varied species of butterflies can also be seen in the Nanda Devi National Park. The park has around 312 species of flowers, along with juniper and alpine vegetation.