Rodewald, Paul G., James H. Withgott, and Kimberly G. Smith. 2013. “Pine Warbler (Setophaga pinus).” 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/pinwar doi: 10.2173/bna.438