His father had a lumber manufacturing business in Pequaming, Michigan named Charles Hebard and Sons, where he had co-developed a saw-mill and associated company town.
Hebard attended Asheville School in North Carolina, educated by a private tutor, before graduating from Yale University in 1910.
During field trips to Western Europe, Panama, Cuba, Jamaica, Columbia and the Bahamas, Hebard built a collection of 250,000 specimens, which he presented to the academy in 1945.
He wrote 197 journal articles and monographs on entomological topics, either individually or jointly with his fellow entomologist, James A. G. Rehn, comprising over 5,000 pages.
[8] On October 16, 1913, he married Margaret Champlin Perry (née Claxton), a granddaughter of artist John La Farge (and who was also descended from Oliver Hazard Perry, Mayflower passenger William Brewster and Benjamin Franklin), and they had three children, naturalist Morgan Hebard, Jr., Charles Bradford Hebard (died February 27, 1930), and Margaret Champlin Perry, wife of Richard Wingate Lloyd (BA Princeton 1928)[8][9] Beginning about 1936 he was affected by acute rheumatoid arthritis.