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.
2011
2023
1977
2009
1953
2018
2016
2017
2024
2012
2021
1997
2026
2015
2022
2013