Photograph of Tibetan and Bhutia coolie labourers, from an album of Miscellaneous views in India, taken John H. Doyle in the 1870s. Coolies were hired labourers or burden carriers. Bhutias were Himalayan people who are believed to have emigrated southward from Tibet in the 9th century or later. The Bhutia constitute a majority of the population of Bhutan and form minorities in Nepal and India, particularly in Sikkim and Darjeeling.