Dr. Coues adds that, like most birds which subsist indifferently on varied animal or vegetable food, this species is not, strictly speaking, migratory, as it can find food in winter anywhere except at its loftiest points of distribution. A descent of a few thousand feet from the mountains thus answers all the purposes of a southward journey performed by other species, so far as food is concerned, while its hardy nature enables it to endure the rigors of winter. According to his observations, this bird feeds principally upon juniper berries and pine seeds, and also upon acorns and other small hard fruits.
Dr. Coues describes this bird as garrulous and vociferous, with curiously modulated chattering notes when at ease, and with extremely loud harsh cries when excited by fear or anger. It is also said to be restless and impetuous, as if of an unbalanced mind. Its attitudes on the ground, to which it frequently descends, are essentially Crow-like, and its gait is an easy walk or run, very different from the leaping manner of progress made by the Jays. When perching, its usual attitude is stiff and firm. Its flight resembles that of the Picicorvus. After breeding, these birds unite in immense flocks, but disperse again in pairs when the breeding-season commences.
Nothing, so far, has been published in regard to the character of the eggs.
Subfamily GARRULINÆ.
Char. Wings short, rounded; not longer or much shorter than the tail, which is graduated, sometimes excessively so. Wings reaching not much beyond the lower tail-coverts. Bristly feathers at base of bill variable. Bill nearly as long as the head, or shorter. Tarsi longer than the bill or than the middle toe. Outer lateral claws rather shorter than the inner.
The preceding diagnosis may perhaps characterize the garruline birds, as compared with the Crows. The subdivisions of the group are as follows:—
A. Nostrils moderate, completely covered by incumbent feathers.
a. Tail much longer than the wings; first primary attenuated, falcate.
Pica. Head without crest.
b. Tail about as long as the wings; first primary not falcate.