Behle, William and Perry, Michael L. Utah Birds: Guide, Check-list and Occurence
Charts. Salt Lake City, Utah: Utah Museum of Natural History, 1975.

Behle, William, Sorensen, Ella D., and White, Clayton. Utah Birds: A Revised Checklist. Salt Lake City, Utah: Utah Museum of Natural History University of Utah Printing Service, 1985.

DeGange, Anthony R., Fitzpatrick, John W., Layne, James N. and Woolfenden, Glen E. "Acorn Harvesting by Florida Scrub Jays." Ecology. 1989. 348 - 356.

Hayward, C. Lynn, Cottam, Clarence, Woodbury, Angus M., and Frost, Herbert H. Birds of Utah. Provo: Brigham Young University Press, 1976.

Muir, John. The Mountains of California. New York: Dorset Press, 1988.

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