Weidensaul, Scott, Tara Rodden Robinson, Robert R. Sargent, and Martha B. Sargent. 2013. “Ruby-throated Hummingbird (Archilochus colubris).” 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/rthhum doi: 10.2173/bna.204