Birhor Tribe ( Pvtgs , Primitive , Particularly vulnerable tribal group) - Jharkhand - Traditional Birhor tribal hut in a village in Jharkhand . Birhor people are a tribal / adivasi forest people , traditionally nomadic, living primarily in the Indian state of Jharkhand. They speak the Birhor language, which belongs to the Munda group of languages of the Austroasiatic language family .