In 1966, Heinz Sielmann sets off on his longest expedition. He spent 19 months traveling through the wilderness of North America. From the alligator swamps of the Everglades to the breeding grounds of arctic waterfowl.
2017
2021
1987
2023
2025
2018
2024
1971
2013
1966
2012
1998
2001
2016
2008
1996