Craik, Shawn, John Pearce, and Rodger D. Titman. 2015. “Red-breasted Merganser (Mergus serrator).” 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/rebmer doi: 10.2173/bna.443