Hab. Pacific coast of United States to Rocky Mountains. Darkest and with least white in Western Oregon and Washington.
In the preceding article we have given the comparative characters of this form, which we can only consider as a variety, and not very permanent or strongly marked at that.
As in pubescens, this race varies much in the color of the under parts, which are sometimes pure white, sometimes smoky-brown. It is suggested that this is partly due to a soiling derived from inhabiting charred trees. It is, at any rate, of no specific value.
Habits. Gairdner’s Woodpecker is the western representative and counterpart of the Downy Woodpecker of the east, resembling it in size and general habits, and only differing from it in certain exceptional characteristics already mentioned. It is found throughout western North America, probably from Mexico to the British Possessions, and from the eastern base of the Rocky Mountains to the Pacific.
Dr. Cooper met with it in California, chiefly in the northern parts of the State, but did not observe any south of the Santa Clara Valley. Dr. Coues saw none in Arizona, or possibly a single specimen not positively ascertained.
Dr. Cooper found one of its nests near Santa Clara, on the 24th of May, containing young. It had been burrowed in a small and partly rotten tree, and was about five feet from the ground. From the fact that they were found breeding so far south he infers that among the mountains they probably occur much farther to the south, as do most other northern birds. He found them frequenting chiefly the smaller trees in the vicinity of the evergreen woods, where they were to be seen at all seasons industriously tapping the bark to obtain insects.
Dr. Newberry mentions finding them very common in Oregon, and also in Northern California. In Washington Territory, Dr. Suckley found them extremely common on the Lower Columbia, especially among the willow-trees lining its banks. They were resident throughout the winter, and in these situations were very abundant. In January, 1856, he found them so abundant among the willows growing on the islands in the delta of the Willamette, that he readily obtained eight specimens in the space of an hour. At that season they were very unwary, giving little heed to the presence of man, not even allowing the near discharge of a gun to interfere with their busy search for food.
Dr. Heermann speaks of it as neither common nor especially rare. He obtained several specimens among the mountains of Northern California.
Mr. Lord met with these Woodpeckers abundantly in the Northwestern
Boundary Survey. They differed slightly in their habits from the P. harrisi, generally hunting for insects on the maples, alders, and stunted oaks, rather than on the pine-trees. Specimens were taken on Vancouver Island, Sumass Prairie, Colville, and the west slope of the Rocky Mountains at an altitude of seven thousand feet above the sea-level.