might be loafing in a rye pairon area which would compact the willow, bison would prefer to be on a hill top catching the breeze and seeing the vista up there. they're always on the move. they're a sharp hoove animal. which allows seeds to take root. >> they're such majestic creatures, and it just feels like the way the earth should be. the natural environment like this actually means that the glass is going to be different, the way that they graze. the soil is going to be different because of the grass that's growing in it, and as a result it's grass like this that's actually pulling carbon dioxide out of the air. so these bison can actually help save the planet. >> the whole ecosystem's come back together now. it's all in balance it feels like. to see this vision now with all these bison, lush green grass, i didn't have that vision 25 years