Brett Westwood looks at the history of a bird which has become a byword for male beauty. It's all about the tail: inspiration for everyone from Darwin to Oscar Wilde, from poets to peacocking pop stars. In Lancashire, Brett walks among peacocks of every shade and type, and with colour scientist Pete Vukusic explores the secrets of the bird's shimmering, iridescent appeal. Laurence Llewelyn-Bowen, a natty dresser himself, explains the birds influence on pioneering artist Aubrey Beardsley, and Maan Barua reveals the enduring influence of the bird in its native India - traded as a gift for centuries, and elected as a national symbol following independence. Producer: Melvin Rickarby