How old is Bernd Heinrich?

Bernd Heinrich, is a professor emeritus in the biology department at the University of Vermont and is the author of a number of books about nature and biology. Heinrich has made major contributions to the study of insect physiology and behavior, as well as bird behavior. In addition to many scientific publications, Heinrich has written over a dozen highly praised books, mostly related to his research examining the physiological, ecological and behavioral adaptations of animals and plants to their physical environments. He has also written books that include more of his personal reflections on nature. He is the son of ichneumon expert Gerd Heinrich.