Director of Research for Rolf C. Hagen Inc. and the Hagen Avicultural Research Institute (HARI), holds a Master of Agriculture from the University of Guelph, specializing in Psittacine Aviculture, with additional studies in avian nutrition and zoology.
In 1985, he founded HARI, establishing a globally recognized program for research on captive breeding, nutrition, and care of companion birds.
Over 37+ years, HARI has advanced studies on parrot health, breeding, and environmental factors. A prolific author and speaker, Mark has shared his expertise worldwide through papers and presentations on avian science and husbandry.