Arcese, Peter, Mark K. Sogge, Amy B. Marr, and Michael A. Patten. 2002. “Song Sparrow (Melospiza melodia).” The Birds of North America, edited by Paul G. Rodewald. Ithaca: Cornell Lab of Ornithology. Retrieved from the Birds of North America: https://birdsna.org/Species-Account/bna/species/sonspa doi: 10.2173/bna.704