Muller, Martin J., and Robert W. Storer. 1999. “Pied-billed Grebe (Podilymbus podiceps).” 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/pibgre doi: 10.2173/bna.410