Last in the series of documentaries by film-makers from around the world.
Mountains of the Thunderer
High above the mountains of South America soars the condor, the largest bird of prey and "the undertaker of the Andes".
Like all carrion eaters, this New World vulture has undesirable table manners, but feeding etiquette is not as chaotic as it looks. Condors have rules, and none more strict than at their secret bathing pools - behaviour which has never been seen orfilmed before.
See today's choices. Producer Olivier Bremond