During the winter and early spring, Mr. Audubon states that these birds feed on various kinds of berries, especially those of the _Ilex cassina_ and of the common holly, and those of the exotic tallow-tree, now so common near Charleston (_Stillingia sebifera_). In January and February these trees are much resorted to by the Crows, who greedily devour their white and oily seeds. Mr. Audubon found these birds breeding generally on moderate-sized trees of the loblolly-pine, building their nests towards the extremities of the branches, about twenty feet from the ground. The nests are smaller than those of the Crow, and are built of sticks, lined with dry grasses and moss, and neatly finished with fine fibrous roots. The eggs are five or six in number, and resemble those of the Crow, but are smaller. Two eggs of this species, from St. Simon’s Island, measure, one 1.50 in length by 1.10 in breadth, the other 1.52 by 1.09. Their ground-color is a light blue with a slight greenish tinge, marked over the entire egg with small blotches of a light brown. An egg from Great Egg Harbor, obtained by Wilson, from the old Peale Museum, and which may be a faded specimen, has no tinge of blue or green, but a ground of pinkish-gray, marked with smaller blotches and cloudings of dark drab. It measures 1.46 inches in length by one inch in breadth. GENUS PICICORVUS, BONAP. _Picicorvus_, BONAPARTE, Consp. Av. 1850, 384. (Type, _Corvus columbianus_, WILS.) [Illustration: _Picicorvus columbianus._] GEN. CHAR. Leaden-gray color, with black wings and tail. Bill longer than the head, considerably longer than the tarsus, attenuated, slightly decurved; tip without notch. Culmen and commissure curved; gonys straight or slightly concave, as long as the tarsi. Nostrils circular, completely covered by a full tuft of incumbent white bristly feathers. Tail much shorter than the wings, nearly even or slightly rounded. Wings pointed, reaching to the tip of tail. Third, fourth, and fifth quills longest. Tarsi short, scarcely longer than the middle toe, the hind toe and claw very large, reaching nearly to the middle of the middle claw, the lateral toe little shorter. A row of small scales on the middle of the sides of tarsus. Color of the single species leaden-gray, with black wings and tail. [Line drawing: _Picicorvus columbianus._ 4461] [Line drawing: _Nucifraga caryocatactes._ 9673] This genus is so similar to _Nucifraga_ as to be hardly separable; the principal difference being in the slender and more decurved and attenuated bill, with a slightly concave, instead of convex, culmen, and plain instead of spotted plumage. The differences of form are expressed by the accompanying outlines of the generic features of the two. But one species is known, this being peculiar to Western North America. Picicorvus columbianus, BONAP. CLARKE’S CROW.