Working with partners, the U.S. Fish & Wildlife Service uses a range of conservation tools to "recover" endangered and threatened species to ensure that they are secure members of their ecosystems. These tools include restoring and acquiring habitat, removing introduced animal predators or invasive plant species, conducting surveys, monitoring individual populations, and breeding species in captivity and releasing them into their historic range. As a result of these efforts, the Endangered Species Act has been credited with saving species such as the California condor, blackfooted ferret, peregrine falcon, and our Nation's symbol, the bald eagle, from extinction. The FWS maintains a list of Recovery Plans for endangered species.