In the Grand Canyon, Woodpeckers store their food in hollowed out holes in trees, but when a squirrel tries to steal the supply - they defend their stockpile.
Many equate the English moors with open grassland and bogs. However, they were not always this way. Once temperate rainforests, the trees were felled and fires swept through the land.
Rockhopper penguins thrive in the harsh conditions of the remote Falkland Islands… but wind, rain (and guano!) is a real challenge for the Hostile Planet film crew.