Sherry, Thomas W., Richard T. Holmes, Peter Pyle, and Michael A. Patten. 2016. “American Redstart (Setophaga ruticilla).” 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/amered