Futureproof Extra: The Secret Perfume of Birds

There's much to admire about birds. They can soar through the skies, build durable nests, sing the most beautiful songs, and possess a visual acuity that is truly something to behold. But when it comes to their other senses how do they fare? For a long time, it was widely believed that birds had none, but that didn't sit right with Danielle J. Whittaker, Evolutionary Biologist, Managing Director of the COLDAX Center for Oldest Ice Exploration, and author of ‘The Secret Perfume of Birds: Uncovering the Science of Avian Scent’. She joins Jonathan to discuss.