Female (11,826, Chiloweyuck Depot, Washington Territory, Aug. 6, 1858; C. B. Kennerly). Above black, broken by transverse mottlings of bright reddish-brown or rufous; these confused posteriorly, but in form of regular transverse bars anteriorly. Below dusky-plumbeous, plain on abdomen, with sagittate spots on jugulum, and deltoid ones on the flanks, etc., of reddish-white. Length, 20.00; wing, 8.50; tail, 6.30.
Adult male (4,505, Cascade Mountains, Dr. Newberry). Above plain fuliginous-black, the mottlings scarcely apparent. No white markings on scapulars; tail-band deep plumbeous, only .60 wide, but well defined.
Young (11,827, Chiloweyuck Depot). Similar to, but much more reddish than, young of var. obscurus.
Hab. Northwest coast region, from Oregon to Sitka.
A male (46,070, May, 1866; Bischoff) from Sitka is much mottled with bright reddish-rusty on the dorsal region, and washed with the same on the forehead. (Tail-band .60 of an inch wide). A female (46,073, Sept., 1866) from same locality is so strongly washed with dark, almost castaneous, ferruginous as to appear mostly of this color above, this being very bright on the crown and forehead.
Habits. This race is the more northern and northwestern coast form of the Dusky Grouse, and is found from the Columbia River and British Columbia to Alaska. According to Dr. Suckley, it is generally known as the Blue Grouse in Oregon, and is also called the Pine Grouse, as well as the Dusky Grouse. He met with it for the first time when his party had reached the main chain of the Rocky Mountains, and where they found it exceedingly abundant, as afterwards in the Blue Mountains of Oregon, the Cascade Mountains, and in all the timbered country between the Coast Range and the Pacific Ocean. About the middle of November these birds are said to entirely disappear, and it is very rare to meet with even a single individual between that period and the 20th of the following March. As to their whereabouts during this period there is a great difference of opinion among the settlers. Some maintain that they are migratory and retire to the south. Others are of the opinion that they retire to the tops of the highest evergreen trees, where they pass the cold season in a state of partial torpor among the thickest foliage of the branches. As these birds are known to subsist on the leaves of the Coniferæ, and can always obtain sufficient water from the snow and rain-drops to supply their wants, Dr. Suckley was inclined to favor the latter explanation of their absence. He saw one of these birds on the ground during a fall of snow, in January, near the Nisqually River, in Washington Territory, and he was informed that a hunter near Olympia, whose eyesight was remarkably excellent, was able, any day during the winter, to obtain several birds by searching carefully for them among the tree-tops of the tallest and most thickly leaved firs. This requires much better eyesight than most men possess, for these birds are of a sombre hue, crowd very closely to the limb, and sit there immovable. They are therefore very difficult to find among the dense branches.
The first indication of their presence in spring is the courting call of the male. This is a prolonged sound, resembling the whir of a rattan cane moved rapidly through the air. This is repeated several times with considerable rapidity, and then stops for a brief interval. This is said to be produced by the alternate inflation and contraction of sacs, one on each side of the throat, which are usually concealed by the feathers, and are covered by an orange-colored, thick, corrugated skin. At Fort Steilacoom these birds were very abundant during the spring and early summer, and were mostly confined to the forests of firs. Later in the season, and after hatching, they are more generally found on the ground in search of berries and seeds. When alarmed, they seek safety among the dense foliage of the trees, seeming instinctively to understand the advantage of thus hiding. He has known an entire flock of five, concealed among the ferns and grass, to be shot one by one, without an attempt being made by a single individual to fly. This Grouse is said to be a very fine table bird, its pine taste only adding to its game-flavor. Their full weight is from 2¾ to 3½ pounds.
Dr. Cooper never met with the nest of eggs of either of the races of the Dusky Grouse, but in June flocks of half-grown young were killed by the Indians near Puget Sound. In winter they were so rarely seen west of the mountains that they are believed to keep entirely in the trees. In October, 1853, he saw a flock running through the snow near the Spokane Plains, one of which was shot; but he never afterwards met with any in the winter.
Mr. J. K. Lord found this Grouse almost exclusively on the western side of the Rocky Mountains. It appeared at Vancouver, at Nisqually, and along the banks of the Fraser River, about the end of March, the male bird announcing his coming by a kind of love-song. This is a booming noise, repeated at short intervals, and so deceptive that Mr. Lord has often stood under the tree where the bird was perched and imagined the sound came from a distance.
Mr. Nuttall found this Grouse breeding in the shady forests of the region of the Columbia, where he saw or heard them throughout the summer. He describes the tooting made by the male as resembling the sound caused by blowing into the bung-hole of a barrel. They breed on the ground, and are said to keep the brood together all winter.