Scarlet Macaws take their medicine. Earthflight (Winged Planet) Narrator David Tennant)

Nervous Scarlet Macaws arrive at clay licks in the Amazonian jungle to reap the benefits of the medicinal clay. The clay not only settles their stomach but also provides the macaws with essential sodium and calcium supplements.

Earthflight (winged planet) uses many different filming techniques to create the experience of flying with birds as they encounter some of the greatest natural events on the planet.

Clip from our series Earthflight - Episode 4 'South America'.You can download this episode or the whole series on iTunes in the UK at:

https://itunes.apple.com/gb/tv-season...

Showing Thursday 19th January 2012 at 8pm on BBC1

For more information about the series visit http://www.earthflight.co.uk

For more information about John Downer Productions visit our website: http://www.jdp.co.uk

Narrated by David Tennant
Series Producer: John Downer
Music by Will Gregory and Steven Faux