Eagle Nest Wildlife Sanctuary is located in the West Kameng District of Arunachal Pradesh and covers an area of 217 sq km. Altitude of the sanctuary varies from 500 mtrs to 3250 mtrs and is the most exotic and largest closed-canopy forest of Arunachal Pradesh. This is a birding hotspot with over 450 species of listed birds. Eaglenest is notable as a prime birding site due to the extraordinary variety, numbers and accessibility of bird species here. Untouched lash green forest and snowcapped high peaks on the horizon also makes this place scenically most beautiful place in western Arunachal Pradesh.

Eaglenest derives its name from the Red Eagle Division of the Indian Army, which was posted in the area during 1950s.

Flora and Fauna:

Eagle nest is not only embraced by rich biodiversity but also believed to be an obscured zone in eastern Himalaya even now.

Eaglenest shelters some of the rarest and exotic species of animal and birds found in India. In Eaglenest a new taxon of primate was discovered by noted primatologist of north-east India Dr Anwaruddin Choudhury in 1997 and later described as a new species, i.e., Arunachal Macaque.

Eagle nest is also the site where Bugun Liocichla was first discovered in 1995 and described as new bird specie. The highest elevation, 11000 ft. that the wild Asian elephants reach anywhere is also partly in this sanctuary.

Eaglenest is home to at least 15 species of Mammal including Bengal Tiger, Asian Elephant, Red Panda, Assamese Macaque, Arunachal Macaque, Himalayan Black Bear, Gaur etc.

But prime attractions of Eaglenest are its avifaunal species. More than 400 species of birds has been recorded in the sanctuary and adjacent areas. The sanctuary has the unique distinction of having three tragopan species i.e. Blyth’s Tragopan, Temminck’s Tragopan and Satyr Tragopan. Other noteworthy species recoded in Eaglenest are Hill Partridge, Chestnut-breasted Partridge, Grey Peacock Pheasant, Speckled Piculet, Bay Woodpecker, Darjeeling Woodpecker, Golden-throated Barbet, Rufous-necked Hornbill, Wreathed Hornbill, Banded Bay Cuckoo, Vernal Hanging Parrot, Tawny Fish Owl, Hodgson's Frogmouth, Mountain Imperial Pigeon, Ibisbill, Wood Snipe, Jerdon's Baza, Peregrine Falcon, Blue-napped Pitta, Silver-breasted Broadbill, Long-tailed Broadbill, Common Green Magpie, Maroon Oriole, Slaty-blue Flycatcher, Pygmy Blue Flycatcher, Grey-headed Canary Flycatcher, Indian Blue Robin, Orange-flanked Bush Robin, Golden Bush Robin, Purple Cochoa Cochoa, Green Cochoa, Beautiful Nuthatch, Wallcreeper, Goldcrest, Slaty-bellied Tesia , Grey-bellied Tesia, Blyth's Leaf Warbler, Coral-billed Scimitar Babbler, Blue-winged Laughingthrush, Pygmy Wren Babbler, Rufous-throated Wren Babbler, Silver-eared Mesia, Red-billed Leiothrix, Cutia, Blue-winged Minla, Chestnut-tailed Minla, Golden-breasted Fulvetta, Nepal Fulvetta, Beautiful Sibia, Scarlet Finch etc.

Eaglenest is home to some of the fascinating and rare reptiles and amphibians of the world. 34 Species of Amphibians and 24 species of snakes along with 7 species of lizard and 3 agamas found here. Abor Hills Agama was rediscovered here after 125 years. Its also houses 165 species of butterfly including Bhutan Glory, Grey Admiral, Dusky Layrinth, Tigerbrown, Jungle queen etc.