Federal duck stamp: The federal duck stamp program is one of the most successful national protection programs in the United States. The program was launched on 1934, and the proceeds from the sale of American duck tickets were used to protect waterfowl in millions of acres of swamp wetlands in the United States. 1934, American duck tickets became the legal payment voucher for hunting expenses for the first time in North Dakota, USA. From then on, all waterfowl hunters aged 16 must buy American duck tickets and paste them on hunting licenses issued by American state governments.