Clark’s Nutcracker is the presiding genius of the East-side slopes and light-forested foothills, as well as of the rugged fastnesses of the central Cordilleras. His presence, during fall and winter, at the lower altitudes depends in large measure upon the pine-cone crop, since pine seeds are his staple, tho by no means his exclusive diet. This black and white and gray “Crow” curiously combines the characteristics of Woodpecker and Jay as well. Like the Lewis Woodpecker, he sometimes hawks at passing insects, eats berries from bushes, or alights on the ground to glean grubs, grasshoppers, and black crickets. In the mountains it shares with the Jays of the _Perisoreus_ group the names “meat-bird” and “camp-robber,” for nothing that is edible comes amiss to this bird, and instances are on record of its having invaded not only the open-air kitchen, but the tent, as well, in search of “supplies.” Of its favorite food, John Keast Lord says: “Clark’s ‘Crows’ have, like the Cross-bills, to get out the seeds from underneath the scaly coverings constituting the outward side of the fir-cone; nature has not given them crossed mandibles to lever open the scales, but instead, feet and claws, that serve the purpose of hands, and a powerful bill like a small crowbar. To use the crowbar to advantage the cone needs steadying, or it would snap at the stem and fall; to accomplish this one foot clasps it, and the powerful claws hold it firmly, whilst the other foot encircling the branch, supports the bird, either back downward, head downward, on its side, or upright like a woodpecker, the long clasping claws being equal to any emergency; the cone thus fixed and a firm hold maintained on the branch, the seeds are gouged out from under the scales.” These Nutcrackers are among the earliest and most hardy nesters. They are practically independent of climate, but are found during the nesting months—March, or even late in February, and early April—only where there is a local abundance of pine (or fir) seeds. They are artfully silent at this season, and the impression prevails that they have “gone to the mountains”; or, if in the mountains already, the presence of a dozen feet of snow serves to allay the oölogist’s suspicions. The nest is a very substantial affair of twigs and bark-strips, heavily lined, as befits a cold season, and placed at any height in a pine or fir tree, without noticeable attempt at concealment. The birds take turns incubating and—again because of the cold season—are very close sitters. Three eggs are usually laid, of about the size and shape of Magpies’ eggs, but much more lightly colored. Incubation, Bendire thinks, lasts sixteen or seventeen days, and the young are fed solely on hulled pine seeds, at the first, presumably, regurgitated.