The COMMON TREE CREEPER (_Certhia familiaris_) is of a deep grey, spotted with white, the under side being entirely of pure white; the bridles and rump are brownish grey, the latter shaded with yellowish red; a white stripe passes over the eyes. The quills are deep brownish grey, and all except the first are tipped with white, and have a whitish yellow line across the centre; the tail-feathers are brownish grey, those at the exterior edged with light yellow. The eye is dark brown, the upper mandible black, and the lower portion of the beak reddish grey, as is the foot. The length of this species is five, and its breadth seven inches; the wing measures two inches and one-third, and the tail two inches and one-sixth. [Illustration: THE COMMON TREE CREEPER (_Certhia familiaris_).] The Common Tree Creeper is an inhabitant of the woodland districts and orchards of Europe and Siberia, and is frequently found at a considerable elevation on such mountains as are not entirely destitute of trees. Like other members of its family, it remains within a certain limited tract during the breeding season, and after that period wanders over the surrounding country in company with Titmice, Woodpeckers, and other birds. Its flight is rapid, but unsteady; and during the greater part of the year it is restricted to the slight effort required to pass from one tree to another. Upon the ground its movements are extremely awkward; it is only among the branches that it displays the wonderful activity of which it is capable. Its cry closely resembles that of the Golden-crested Wren. Towards man it exhibits the utmost friendliness, and frequently ventures close to his dwellings, or even occasionally makes its nest within some tempting hole in an old house or wall. During the summer the temperament of the Tree Creeper is joyous and brisk, but wintry weather soon renders it dull and uneasy. No doubt this very visible discomfort arises in some measure from the impossibility of keeping its feathers in the neat, trim state in which it delights at other seasons of the year.