"Dusky grouse are named after the bluish-gray appearance of the male. In Arizona grouse are found in the mixed conifer and aspen forests above 8,500 feet. As a consequence, these birds are only found in the White, Blue, Escudilla, Chuska, and Buckskin (North Kaibab) mountains, and on the San Francisco Peaks where they were introduced in the mid- 1970s. An additional transplant effort is underway to establish dusky grouse on the Mogollon Rim. Males are measurably larger than females, 2-year-old “cocks” weigh up to 3 pounds as opposed to the adult female’s average weight of between 1.75 to 2 pounds. In comparison, first year birds or poults typically weigh only 16 to 28 ounces during the early days of the September hunting season."
Straight off game and fish site.