Sir David Attenborough chooses his favorite recordings from the pure world which have revolutionised our understanding of track. Every one - from the track of the most important lemur to the track of the humpback whale to the track of the lyrebird - was recorded in his lifetime. When Sir David was born, the science of track had already been reworked by Charles Darwin’s idea of sexual choice: singing is harmful because it reveals the singer’s location to predators, however it additionally gives the male an enormous reward, the prospect to draw a feminine and go on genes to the following era. Therefore males sing and females do not.
