Strickland, Dan, and Henri Ouellet. 2011. “Canada Jay (Perisoreus canadensis).” 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/gryjay doi: 10.2173/bna.40