According to an article published by the US Fish and Wildlife Service on the Peregrine Falcon named "A Success Story", action has been taken on restore this species. The banning of the DDT insecticide was one of them, but the most impactful deed was the capture of several peregrine falcons to be used as breeding stock. These creatures would be then released into the wild at a slow pace, with no contact with adult specimens considered. This practice is described in the article as "Hacking".
