The Bakhtiari are a Lur tribe from Iran. They speak the Bakhtiari dialect of the Luri language. Bakhtiaris primarily inhabit Chaharmahal and Bakhtiari and eastern Khuzestan, Lorestan, Bushehr, and Isfahan provinces. Bakhtiari tribes have an especially large population concentration in the cities of Masjed Soleyman, Izeh, Shahr-e Kord, and Andika, and the surrounding villages.[citation needed] A small percentage of Bakhtiari are still nomadic pastoralists, migrating between summer quarters (sardsīr or yaylāq) and winter quarters (garmsīr or qishlāq). Numerical estimates of their total population vary widely.