Controversial, but it works.
Barred owls shot by the U.S. Fish and Wildlife Service in order to save populations of the Northern spotted owl.
Forest managers in the Pacific Northwest are facing a tough decision. Environmentalists shut down logging in the national forests in the1980s and 1990s in order to save the Northern spotted owl. Considered an indicator species by biologists, meaning that a given species is studied and assumed to be indicative of the health of species throughout the ecosystem, this sensitive owl needs old growth forest to survive. Overlogging and deforestation sent spotted owl numbers plummeting. Federal courts forced the government to list the owl under the Endangered Species Act, which closed off the remaining old growth forest in the Northwest to logging.
In the last 20 years, spotted owl numbers have not recovered. This is largely because of the arrival of the more aggressive and closely related barred owl. Many scientists believe the barred owl is little different from the spotted owl, perhaps only separated by a few thousand years of living in different forests. The natural westward migration of the barred owl has threatened spotted owl populations both because the barred owl both mates with spotted owls and often eats them.
In response, the U.S. Fish and Wildlife Service has made the decision to start shooting barred owls in order to protect the spotted owl.