New York aristocrat Rosalie Edge was a crank, a Suffragette, and an ardent conservationist. A bio of her came out last year: Rosalie Edge, Hawk of Mercy: The Activist Who Saved Nature from the Conservationists.
Among the many causes she took up, one was protection of raptors from the mass slaughter of her era. She bought Hawk Mountain in Eastern PA and created the Hawk Mountain Sanctuary. A high point on the Eastern raptor migration flyway, Hawk Mountain had been a popular site for the slaughter of raptors by gunners who believed they were going some sort of good while having fun.
Hawk Mountain is now a foundation engaged in conservation education programs. It remains an excellent viewing spot in fall migration season. (Photo from the Hawk Mtn website.)