One of my favorite animals to inhabit the alpine tundra and one I always think of as summer turns to fall is the American Pika. Scurrying about above the tree-line diligently gathering vegetation to stock their winter larder. The Pika is adapted to live year-round in the harsh alpine environment. However tough they may be climate change poses a significant danger to the continued existence of the Pika and in the lower regions of North America have already lost up to 1/3 of their previous habitat to climate change.
It would be a sad day indeed if a hike through the alpine tundra was devoid of a pikas song.