Career
In 1958, Stager visited Clipperton Island and saw that the breeding colonies of brown boobies and masked boobies were being devastated by feral pigs that had been introduced to the island by earlier travelers. To protect the booby populations, Stager personally shot and killed every pig on the island, for a total of 58. The booby populations subsequently recovered.
Stager"s actions served to inspire the ecological group Island Conservation, which focuses on removing introduced species from islands.
