Top film-makers back penguin intervention on Attenborough show

Wildlife documentary experts defend crew's decision to help trapped birds

Leading wildlife camera operators and film-makers have defended the film crew on David Attenborough's latest BBC series over their decision to break with convention and intervene to save a group of penguins that had become trapped in a ravine.

Nature film-makers are discouraged from intervening in the events they are attempting to capture on film. While the general principle is to avoid interfering with the natural course of events, the crew on the Dynasties series stepped in when they saw the birds' predicament.