6. Picus nuttalli. ♀ Cal., 5400.
7. Picus albolarvatus. ♂ Cal., 16066.
8. Picus albolarvatus ♀ Cal.
Habits. This species has a well-defined and extended distribution, from the Pacific to the Atlantic, and from the northern portions of the United States to the extreme Arctic regions. In the United States it has been found as far south as Massachusetts, New York, and Ohio, but rarely; and, so far as I am aware, it is a winter visitant only to any but the extreme northern portions of the Union, except along the line of the Rocky Mountains and the Sierra Nevada. Audubon says it occurs in Northern Massachusetts, and in all portions of Maine that are covered by forests of tall trees, where it constantly resides. He saw a few in the Great Pine Forest of Pennsylvania, and Dr. Bachman noticed several in the neighborhood of Niagara Falls, and was of the opinion that it breeds in the northern part of New York. The same writer describes the nesting-place of the Arctic Woodpecker as generally bored in the body of a sound tree, near its first large branches. He observed no particular choice as to the timber, having seen it in oaks, pines, etc. The nest, like that of most of this family, is worked out by both sexes, and requires fully a week for its completion. Its usual depth is from twenty to twenty-four inches. It is smooth and broad at the bottom, although so narrow at its entrance as to appear scarcely sufficient to enable one of the birds to enter it. The eggs are from four to six, rather rounded and pure white. Only one brood is raised in the season. The young follow their parents until the autumn. In the southern districts where these Woodpeckers are found, their numbers are greatly increased in the winter by accessions from the North.
Dr. Cooper found this species quite numerous, in September, in the vicinity of Lake Tahoe and the summits of the Sierra Nevada, above an altitude of six thousand feet. From thence this bird has a northern range chiefly on the east side of these mountains and of the Cascade Range. None were seen near the Lower Columbia. At the lake they were quite fearless, coming close to the hotel, and industriously rapping the trees in the evening and in the early morning. Farther north Dr. Cooper found them very wild, owing probably to their having been hunted by the Indians for their skins, which they consider very valuable. He noticed their burrows in low pine-trees near the lake, where he had no doubt they also raise their young. Dr. Cooper has always found them very silent birds, though in the spring they probably have more variety of calls. The only note he heard was a shrill, harsh, rattling cry, quite distinct from that of any other Woodpecker.
The flight of this Woodpecker is described as rapid, gliding, and greatly undulated. Occasionally it will fly to quite a distance before it alights, uttering, from time to time, a loud shrill note.