Alone in the Wilderness: Part II
2011
High on Maine
1996
Mystery of the Megaflood
2005
A Lonely Place to Die
2011
Vanishing of the Bees
2009
Tears in the Amazon
2010
Living with Wolves
2005
Volavky na Velkém Tisém
1951
Wings of Life
2011
Wildlike
2015
To Teach a Bird to Fly
2020
Our National Parks: A Seasonal Tour
1989
Back from the Brink: Saved from Extinction
2019
La clara y oscura
2014
Wild Shetland: Scotland's Viking Frontier
2019
At the Edge of the World
2008
Charlie, the Lonesome Cougar
1967
Project Grizzly
1997
Richard Hugo: Kicking the Loose Gravel Home
1976
Biocentrics
2023