Summer: Earth’ss Seasonal Secrets, 8.30pm, BBC1

WHILE summer is s about long days and glorious abundance, the living isn’t always easy: the competition for summer bounty can push the world’s wildlife to its limits. Stars of this charming film, narrated by Sherlock’s Andrew Scott, include an adorable pika (pictured), skipping through the Canadian Rockies with a mouthful of goodies for her larder.