- Everett: You know what's interesting is that when the wolves first came back to Yellowstone, the moose and the elk didn't know how to handle it because they were so used to the park being without predators. But sure enough, within about a year their behavior started to change. And they began to move around more and because they were moving around more they stopped grazing in the same spot all season. Lo and behold, cottonwoods, aspen and willow started to sprout up in places where there hadn't been trees before. Those willows upstream weren't even there and the beavers couldn't even build their dams without them. And now we got 11 new beaver colonies in the park and their dams have created ponds for more fish, frogs and insects. These aspens weren't even here 10 years ago. Those birds you hear had nowhere to nest so you wouldn't have heard them. Every month we learn about a small change. Something new in one population can affect another. It all comes back to this, we're all connected. In ways we may not even perceive. All of us.