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One of the most extraordinary structures in the natural world is made by a bird. It’s a Bower - a type of arena in which the male Bower Bird displays himself to attract a female.

Sir David Attenborough recalls his visit to New Guinea and Australia to film the most immodest of all Bowers, that made by the Vogelkoptf Bower Bird.

In a wigwam construction of twigs and orchid stems, based around a central maypole, this remarkable bird decorates the ends of the uprights with single pieces of caterpillar dung, and adorns a manicured lawn with colourful objects he thinks will be attractive to the female.

But why go to this length to attract a female? All is revealed….