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
2009
2019
2015
2016
1993
1998
2014
1994
1987
2005
2004
2021
2020