Connelly, John W., Michael W. Gratson, and Kerry P. Reese. 1998. “Sharp-tailed Grouse (Tympanuchus phasianellus).” 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/shtgro doi: 10.2173/bna.354