Royal Manas National Park (RMNP) is the oldest protected areas in Bhutan. A total of 530 species of birds have been recorded so far, highest among all protected areas. Globally endangered species include the Rufous-necked hornbill and Pallas fish eagle, and 14 other species recorded from the park that are considered to have globally significant breeding populations in Bhutan.
The chestnut-breasted partridge for which there are no recent records outside Bhutan has also been recorded in this richly forested park