The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• Anne King, Date Unknown. "California Partners in Flight" (On-line). Accessed April 02, 2003 at http://www.prbo.org/calpif/htmldocs/species/conifer/fospacct.html.
• BBL - Longevity Records of North American Birds (Online source)
• Baicich, P., C. Harrison. 1997. A Guide to the Nests, Eggs, and Nestlings of North American Birds. Academic Press.
• Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
• Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
• BirdLife International 2009. Passerella iliaca
• California Interagency Wildlife Task Group. 2003. "California Wildlife Habitat Relationships System" (On-line). Accessed April 02, 2004 at http://www.dfg.ca.gov/whdab/html/B504.html.
• Canterbury, G. 2002. Metabolic adaptation and climatic constraints on winter bird distribution. Pp. 946-957 in Ecology, Vol. 83. Accessed April 02, 2004 at http://www.esapubs.org/archive/ecol/E083/014/appendix-A.htm.
• Gill, Frank, and Minturn Wright. 2006. Birds of the World: Recommended English Names. ix + 259
• Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 16, 2011 at http://animaldiversity.org. http://www.animaldiversity.org
• Rising, J. 1996. A Guide to the Identification and Natural History of The Sparrows of the United States and Canada. Academic Press.
• Stanford Alumni, 1999. "Fox Sparrow" (On-line). Accessed April 02, 2004 at http://www.stanfordalumni.org/birdsite/text/species/Fox_Sparrow.html.
• U.S. Fish and Wildlife Service. Date Unknown. "Birds Protected By the Migratory Bird Treaty Act" (On-line). Accessed April 02, 2004 at http://migratorybirds.fws.gov/intrnltr/mbta/mbtandx.html#s.
• USGS Patuxent Wildlife Research Center. 2003. "Longevity Records by Species Number" (On-line). Accessed April 02, 2004 at http://www.pwrc.usgs.gov/BBL/homepage/longvlst.htm.