Nupbikha is an East Bodish language

East Bodish languages

The East Bodish languages are those Bodish languages not covered by the name Tibetan, such as those spoken by the Monpa. They include:*Dakpa*Dzala*Bumthang *Tawang*Black Mountain Monpa .The most divergent is Dakpa...

 spoken by about 2,200 people in central Bhutan

Bhutan

Bhutan , officially the Kingdom of Bhutan, is a landlocked state in South Asia, located at the eastern end of the Himalayas and bordered to the south, east and west by the Republic of India and to the north by the People's Republic of China...

.

Historically, Nupbikha and its speakers have had close contact with speakers of Bumthangkha, Kurtöpkha

Kurtöp language

The Kurtöp language is a member of the Tibeto-Burman language family spoken in the Kurtoe Gewog, Lhuntse District, Bhutan...

, and Khengkha

Khengkha

Khengkha, also called the Kheng language, is a member of the Tibeto-Burman language family spoken in the Zhemgang, Trongsa and Mongar districts of south central Bhutan...

, nearby languages of central and eastern Bhutan, to the extent that they may be considered part of a wider collection of "Bumthang languages." Nyenkha

Nyenkha

Nyenkha is an East Bodish language spoken by about 10,000 people in the eastern, northern, and western areas of the Black Mountains...

, also related to the Bumthang languages, is more divergent while 'Olekha

'Olekha

Olekha, also called the Black Mountain Monpa language, is a Tibeto-Burman language spoken by about 1,000 people in the Black Mountains of the Wangdue Phodrang and Trongsa Districts in western Bhutan. The term 'Ole refers to a clan of speakers....

is only distantly related.