Where can I watch Earthflight in Spain?

Earthflight is a British nature documentary that shows a flight from the view of the wings of birds across six continents, showing some of the world's greatest natural spectacles from a bird's-eye view. it was created by the BBC and the first episode, narrated by David Tennant, aired on BBC One on 29 December 2011. A two-hour subset of Earthflight was aired in October 2012 by the Discovery Channel in the US as Winged Planet. The entire first series aired on PBS, beginning in September 2013, under the title Earthflight, A Nature Special Presentation.