The World Center for Birds of Prey in Boise, Idaho, is the headquarters for The Peregrine Fund, an international non-profit organization founded in 1970 that conserves endangered raptors around the world. The Peregrine Fund is known for its worldwide conservation and recovery efforts of rare and endangered raptors. The organization's first recovery effort focused on the peregrine falcon, which was facing extinction due to the widespread use of the chemical DDT. The peregrine falcon was removed from the U.S. Endangered Species list in 1999 at an international celebration held in Boise.