percent tax on all hunting equipment. This self-imposed tax now generates over $700 million each year and is used exclusively to establish, restore and protect wildlife habitats. The act is named for Nevada Senator Key Pittman and Virginia Congressman Absalom Willis Robertson. Federal Duck Stamp program On 16 March 1934, President Franklin D. Roosevelt signed the Migratory Bird Hunting Stamp Act, which requires an annual stamp purchase by all hunters over the age of sixteen. The stamps are created on behalf of the program by the US Postal Service and depict wildlife artwork chosen through an annual contest. They play an important role in habitat conservation because ninety-eight percent of all funds generated by their sale go directly toward the purchase or lease of wetland habitat for protection in the National Wildlife Refuge System. In addition to waterfowl, it is estimated that one third of the nation's endangered species seek food and shelter in areas protected using Duck Stamp funds. Since 1934, the sale of Federal Duck Stamps has generated $670 million, and helped to purchase or lease of habitat. The stamps serve as a license to hunt migratory birds, an entrance pass for all National Wildlife Refuge areas, and are also considered collectors items often purchased for aesthetic reasons outside of the hunting and birding communities. Although non-hunters buy a significant number of Duck Stamps, eighty-seven percent of their sales are contributed by hunters. Distribution of funds is managed by the Migratory Bird Conservation Commission (MBCC). Species Arabian oryx The Arabian oryx, a species of large antelope, once inhabited much of the desert areas of the Middle East. However, the species' striking appearance made it (along with the closely related scimitar-horned oryx and addax) a popular quarry for sport hunters, especially foreign executives of oil companies working in the region. The use of automobiles and high-powered rifles destroyed their only advantage: speed, and they became extinct in the wild exclusively due to sport hunting in 1972. The scimitar-horned oryx followed suit, while the addax became critically endangered. However, the Arabian oryx has now made a comeback and been upgraded from "extinct in the wild" to "vulnerable" due to conservation efforts like captive breeding. Markhor The markhor is an endangered species of wild goat which inhabits the mountains of Central Asia and Pakistan. The colonization of these regions by Britain gave British sport hunters access to the species, and they