They're trying to win the admiration of females and gather them into a hareem, only then do they stand a chance of mating with them before winter. But the females are not getting in season, so they are not really that interested. And for now, they have a more practical concern, winter will soon be here. They are eager to head down to lower ground before the snow comes in earnest. Some will move down into nearby valleys, whilst others will journey much further, even beyond the boundaries of Yellowstone itself. 

 

Yellowstone is deep in the Rocky Mountains of North America, an isolated high plateau defended by rugged peaks. In the middle is the National Park. The park and the surrounding mountains form one of the most important and spectacular wilderness areas on earth. In just two months this great plateau will become a deep-freeze once more. Before then, the animals of Yellowstone will have to get ready or get out. But for now, below the snow-dusted peaks summer still lingers in the heart of…….