Autumn

S1 E3: Over the summer, Yellowstone has flourished with more living things than at any other time of the year. But, as this documentary shows, winter is around the corner and there are just two months for all Yellowstone's animals to get ready or get out. Elk start moving down from the mountains, but wolves are waiting for them. Beavers stock underwater larders while grizzlies fatten up on nuts.