>> wow. ♪ oh, give me a home where the buffalo roam and the deer and the antelope play ♪ ♪ where seldom is heard a discouraging word and the skies are not cloudy all day ♪ >> it is quiet. >> you thought it would be louder, but it's not. >> no, it's not. >> it's pretty quiet. >> that sounded pretty much like mm, didn't it? >> yeah, that's exactly that sound. this is all for you part of the protecting the planet, having these bison here like this, doing what you've done, right? >> yeah. ♪ >> honestly, when i first heard the bison idea, i wasn't quite sure what to make of it. how did this 80-year-old