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Kung fu frogs

Duration: 00:55

Male tree frogs fight for the highest perches because their calls to females travel the furthest from there.

Available since: Wed 16 Jan 2013

This clip is from

Africa Congo

3/6 David Attenborough journeys to the heart of Africa, which is covered in dense rainforest.

First broadcast: 16 Jan 2013

Image for Congo Not currently available on BBC iPlayer

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