A look at how baby animals communicate in their quest for survival, using sound to beg and call for help in the early days of life.

From melodic songs to strange hums, David Attenborough shares the sounds that gibbons, lyrebirds, bull elk and more use to find a mate - and warn off the competition.

The broadcaster and biologist explores the ways different creatures hear and produce sound and how it can influence their decisions, using cutting-edge audio technology to reveal a new perspective and understanding of animal behaviour.