![](https://image.tmdb.org/t/p/w185/uzQAFloohsMyhNyuOgiProDKoOK.jpg)
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We'll find out how nature is incredibly inventive and has produced two unique mechanisms of natural construction that have fascinated scientists for centuries; weaving in birds and silk.
First Air Date : Jan 29, 2013
Last Air date : Jun 25, 2017
Episode : 27 Episode
Season : 4 Season
Runtime: 22:14 minutes
Country:
Cast: David Attenborough
Crew: