Nature, Season 40, Episode 11, Portugal: Wild Land on The Edge
directed by Gernot Lercher, fl. 1997; produced by Yvette Durrenberger, fl. 2009, Elisabeth Faber, fl. 2017, Gabriele Wistawel, fl. 2010 and Heike Lettau, fl. 2001, Thirteen Productions, in Nature, Season 40, Episode 11 (Arlington, VA: Public Broadcasting Service, 2022), 53 mins
