Nolan, V., Jr., E. D. Ketterson, D. A. Cristol, C. M. Rogers, E. D. Clotfelter, R. C. Titus, S. J. Schoech, and E. Snajdr. 2002. "Dark-eyed Junco (Junco hyemalis)" in The Birds of North America, No. 716 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.