This national park uses helicopters for bison round-up duty

About 400 bison will be dispersed to tribal lands amid ongoing conservation efforts. Breakthroughs, discoveries, and DIY tips sent every weekday. This week, conservationists began their annual bison capture operation at Theodore Roosevelt National Park in western North Dakota. However, the corral doesn't rely on a team of rustlers on horseback. Organizers will round-up this year's estimated 700 bison using a more modern technology-a helicopter.