Hummingbirds: Jewelled Messengers

David Attenborough takes us into the remarkable lives of hummingbirds via stunning slow motion photography. Everything about these tiny birds is superb and extreme.

They have the highest metabolism, fastest heart beat and most rapid wing beat in the avian world. They evolved to feed on flowering plants but are now a crucial part of wider ecosystems.

How do they mate, raise their young, and live?