Cullen, S. A., Joseph R. Jehl Jr., and Gary L. Nuechterlein. 1999. “Eared Grebe (Podiceps nigricollis).” 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/eargre doi: 10.2173/bna.433