(syn. Falcipennis Ϯ Taiga Spruce Grouse F. canadensis) Gr. καναχεω kanakheō to be noisy, to sing loudly (cf. genus Canace Reichenbach, 1852, grouse); "The name which has been used as the generic term for the Spruce partridge and allied species is preoccupied in zoology, for as early as 1838 Canace was applied to a group of dipterous insects by Curtis, while for the birds it was not proposed until 1852. This will necessitate the adoption of Elliot's Dendragapus, if we consider the Dusky Grouse congeneric with the Spruce Partridge. For the subgenus embracing the latter, a substitute for Canace is necessary, and to avoid too great dissimilarity it may be called Canachites* ... *Deriv., καναχεω, to be noisy." (Stejneger 1885). Var. Canchites.