Lowther, Peter E., Alan F. Poole, James P. Gibbs, Scott M. Melvin, and Frederic A. Reid. 2009. “American Bittern (Botaurus lentiginosus).” 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/amebit doi: 10.2173/bna.18