Yellowstone Battle For Life Part 2: Summer

As the spring melts the winter snow, the full extent of Yellowstone is gradually revealed. Now, from the surrounding lowlands herds of elk, pronghorn and bison return from their winter feeding grounds to take advantage of America's richest natural grasslands. Grizzly bears emerge from hibernation to teach their young to hunt fish and how to survive in the Alpine peaks. But just as it seems the easy living of summer has arrived, a new danger emerges.

Yellowstone is a 3-part BBC nature documentary series broadcast in 2009. Narrated by Peter Firth. Filmed over the course of a year in Yellowstone, the documentary tracks the area's wildlife as they grapple with life and death within one of America's last remaining wilderness regions.