How one Native American tribe is working to restore Montana's buffalo population

American Buffalo are currently an elusive breed on the eastern border of Glacier National Park — but one Native American tribe is working to return the species to their old roaming grounds. So far, the Blackfeet Nation has returned 90 of the buffalo to their territory in Montana.

"They were our food, our clothing our lodging, our tools," said Ervin Carlson, the director of the Blackfeet Buffalo Program and president of the Intertribal Buffalo Council. "They were our whole economy … we existed on them."

When European settlers arrived in the 1800s, that delicate balance shifted, until they were hunted to near extinction. But the tribe took action to save the animals.