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.
2013
2004
2014
1991
2007
2024
2011
2010
2017
1958
1992
1993
2006
2000
1995