 At the time of her death, Koepcke was a department head for a natural history museum affiliated with the National University of San Marcos in Lima and a member of the German Ornithologists' Society.After Koepcke's death, Hans-Wilhelm and Juliane both left Peru for Germany, Juliane in 1972, and Hans-Wilhelm in 1974.Hans-Wilhelm lived in Hamburg, teaching zoology at the University of Hamburg until his death in 2000.