An increase in the forest density and the big cat prey base, especially deer, had attracted a Royal Bengal tiger, a first such sighting in 23 years, to the Buxa Tiger reserve. 

Buxa Tiger Reserve lies in Alipurduar district of West Bengal. Its northern boundary runs along the international border with Bhutan. The Phibsoo Wildlife Sanctuary of Bhutan is contiguous to the north of BTR. 

Source: Indian Express