Bob Hayes was the Yukon wolf biologist for nearly two decades. He radio-collared hundreds of wolves, pioneering research on the kill rate by wolves on moose, Dall's sheep and woodland and migratory caribou. He also studied the effects of wolf control on wolf and prey populations, guiding original research on non-lethal ways of controlling predation. He has published in wildlife science journals and academic books, and was a member of the IUCN Wolf Specialist Group. He is retired and he and his wife, Caroline, have lived in the Yukon for 42 years.
