Smith, Robert J., Margret I. Hatch, David A. Cimprich, and Frank R. Moore. 2011. “Gray Catbird (Dumetella carolinensis).” 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/grycat doi: 10.2173/bna.167