Courtship display of a male Macqueens bustard (Chlamydotis macqueenii). This bird is native to the desert and steppe regions of Asia, west from the Sinai Peninsula extending across Kazakhstan east to Mongolia. In the 19th century, vagrants were found as far west of their range as Great Britain. Populations have decreased by 20 to 50 percent between 1984 and 2004 mainly due to hunting and changes in land-use. MacQueens bustard used to be regarded as a subspecies of the houbara bustard (C. undulata) and known as the Asian houbara.