In accord with AOS-NACC (Chesser et al. 2021b), change the scientific name of Spruce Grouse from Falcipennis canadensis to Canachites canadensis, based on genetic evidence that the inclusion of Spruce Grouse in Falcipennis creates a paraphyletic group (Kimball et al. 2011, Persons et al. 2016, Kimball et al. 2021).