Fred and Norah Urquhart

| birth_place = | death_date = | death_place = Pickering, Ontario, Canada | nationality = Canadian | other_names = | occupation = Zoologist | known_for = Research on monarch butterflies | awards = Order of Canada | spouse = Frederick Albert Urquhart }} Frederick Albert Urquhart (December 13, 1911 – November 3, 2002) was a Canadian zoologist and professor of zoology who studied the migration of monarch butterflies, ''Danaus plexippus'' L. Together with his wife, Norah Roden Urquhart , he identified their migration routes, discovered that the migration spans multiple generations of butterflies, and found their wintering place in Mexico—considered "one of the greatest natural history discoveries" of the 20th-century. Provided by Wikipedia