California Department of Fish and Game. 2005. California condor population size and distribution. Website <www.dfg.ca.gov/hcpb/species/t_e_spp/tebird/Condor%20Pop%20Stat.pdf> accessed, 2005.
 U.S.Fish and Wildlife Service. 1996. California Condor Recovery Plan, Third Revision. Portland, Oregon. 62 pp.
 U.S.Fish and Wildlife Service. 2005. Condor population history. Hopper Mountain National Wildlife Refuge Complex. Website <www.fws.gov/hoppermountain/cacondor/Pophistory.html> accessed December, 2005.